<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a025e3-6e8e-729a-a986-40a7fb7deed2,g:ea4e810d-59cd-434a-80d2-1e685197ef5e-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="simple" xlink:href="peng-20260828.xsd#ConsolidatedBalanceSheetsParenthetical"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_01a0f0c0-72fc-78fd-ad77-0c377b15b643" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a0f0c0-72fc-78f4-8a6c-2fd170e86189" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a0f0c0-72fc-78fd-ad77-0c377b15b643" xlink:to="loc_us-gaap_StatementTable_01a0f0c0-72fc-78f4-8a6c-2fd170e86189" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a0f0c0-72fc-7427-bce3-fb715ead56e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a0f0c0-72fc-78f4-8a6c-2fd170e86189" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a0f0c0-72fc-7427-bce3-fb715ead56e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_01a0f0c0-72fc-7427-bce3-fb715ead56e8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a0f0c0-72fc-7427-bce3-fb715ead56e8" xlink:to="loc_us-gaap_RelatedPartyDomain_01a0f0c0-72fc-7427-bce3-fb715ead56e8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_01a0f0c0-72fc-799f-a14d-c9ba16f86184" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a0f0c0-72fc-7427-bce3-fb715ead56e8" xlink:to="loc_us-gaap_RelatedPartyDomain_01a0f0c0-72fc-799f-a14d-c9ba16f86184" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_01a0f0c0-72fc-712a-832b-c4854035317e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_01a0f0c0-72fc-799f-a14d-c9ba16f86184" xlink:to="loc_us-gaap_RelatedPartyMember_01a0f0c0-72fc-712a-832b-c4854035317e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_01a0f0c0-72fc-76da-b4b3-8191c494b402" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a0f0c0-72fc-78fd-ad77-0c377b15b643" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_01a0f0c0-72fc-76da-b4b3-8191c494b402" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TemporaryEquityParOrStatedValuePerShare_01a025e3-70a6-77e0-aa06-20e8667119f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TemporaryEquityParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a0f0c0-72fc-78fd-ad77-0c377b15b643" xlink:to="loc_us-gaap_TemporaryEquityParOrStatedValuePerShare_01a025e3-70a6-77e0-aa06-20e8667119f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TemporaryEquitySharesAuthorized_01a025e3-70a6-7e4d-8bf6-4dca2fd32392" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TemporaryEquitySharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a0f0c0-72fc-78fd-ad77-0c377b15b643" xlink:to="loc_us-gaap_TemporaryEquitySharesAuthorized_01a025e3-70a6-7e4d-8bf6-4dca2fd32392" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TemporaryEquitySharesIssued_01a025e3-70a6-74fb-b970-57f2444b8191" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TemporaryEquitySharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a0f0c0-72fc-78fd-ad77-0c377b15b643" xlink:to="loc_us-gaap_TemporaryEquitySharesIssued_01a025e3-70a6-74fb-b970-57f2444b8191" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TemporaryEquitySharesOutstanding_01a025e3-70a6-7225-82ce-03ef13f3f902" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TemporaryEquitySharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a0f0c0-72fc-78fd-ad77-0c377b15b643" xlink:to="loc_us-gaap_TemporaryEquitySharesOutstanding_01a025e3-70a6-7225-82ce-03ef13f3f902" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TemporaryEquityAggregateAmountOfRedemptionRequirement_01a025e3-70a6-7084-863b-5917f6c567f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TemporaryEquityAggregateAmountOfRedemptionRequirement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a0f0c0-72fc-78fd-ad77-0c377b15b643" xlink:to="loc_us-gaap_TemporaryEquityAggregateAmountOfRedemptionRequirement_01a025e3-70a6-7084-863b-5917f6c567f5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_01a025e3-70a6-7f8e-85e6-639b8fd1247e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a0f0c0-72fc-78fd-ad77-0c377b15b643" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_01a025e3-70a6-7f8e-85e6-639b8fd1247e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_01a025e3-70a6-7812-9465-fee6cc71ce3d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a0f0c0-72fc-78fd-ad77-0c377b15b643" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_01a025e3-70a6-7812-9465-fee6cc71ce3d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_01a025e3-70a6-70cb-804f-9f4b112939b0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a0f0c0-72fc-78fd-ad77-0c377b15b643" xlink:to="loc_us-gaap_CommonStockSharesIssued_01a025e3-70a6-70cb-804f-9f4b112939b0" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_01a025e3-70a6-7538-a030-ec22b4cba0cc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a0f0c0-72fc-78fd-ad77-0c377b15b643" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_01a025e3-70a6-7538-a030-ec22b4cba0cc" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonShares_01a025e3-70a6-7bcb-b6e9-85315eb6427a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a0f0c0-72fc-78fd-ad77-0c377b15b643" xlink:to="loc_us-gaap_TreasuryStockCommonShares_01a025e3-70a6-7bcb-b6e9-85315eb6427a" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/ConsolidatedStatementsofOperations" xlink:type="simple" xlink:href="peng-20260828.xsd#ConsolidatedStatementsofOperations"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/ConsolidatedStatementsofOperations" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a025e3-70a6-771c-b890-770a4f9498dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_StatementTable_01a025e3-70a6-771c-b890-770a4f9498dd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_01a025e3-70a6-79ab-bb37-f0a91b506f6e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a025e3-70a6-771c-b890-770a4f9498dd" xlink:to="loc_srt_ProductOrServiceAxis_01a025e3-70a6-79ab-bb37-f0a91b506f6e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_01a025e3-70a6-79ab-bb37-f0a91b506f6e_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_01a025e3-70a6-79ab-bb37-f0a91b506f6e" xlink:to="loc_srt_ProductsAndServicesDomain_01a025e3-70a6-79ab-bb37-f0a91b506f6e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_01a025e3-70a6-7a7b-a60c-8f3f0b68752d" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_01a025e3-70a6-79ab-bb37-f0a91b506f6e" xlink:to="loc_srt_ProductsAndServicesDomain_01a025e3-70a6-7a7b-a60c-8f3f0b68752d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductMember_01a025e3-70a6-7dd0-9b95-9f4d5b019416" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProductMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_01a025e3-70a6-7a7b-a60c-8f3f0b68752d" xlink:to="loc_us-gaap_ProductMember_01a025e3-70a6-7dd0-9b95-9f4d5b019416" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServiceMember_01a025e3-70a6-7508-908a-1532b1e8e928" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_01a025e3-70a6-7a7b-a60c-8f3f0b68752d" xlink:to="loc_us-gaap_ServiceMember_01a025e3-70a6-7508-908a-1532b1e8e928" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a025e3-70a6-7ae0-9fc3-8e4d6768c7ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a025e3-70a6-7ae0-9fc3-8e4d6768c7ff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_01a025e3-70a6-7b39-b77b-6f4c3b34d959" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_01a025e3-70a6-7b39-b77b-6f4c3b34d959" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_01a025e3-70a6-7b9c-b7a8-78aaca23bdf5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_GrossProfit_01a025e3-70a6-7b9c-b7a8-78aaca23bdf5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpensesAbstract_01a025e3-70a6-7d8e-87c2-04063311163a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_OperatingExpensesAbstract_01a025e3-70a6-7d8e-87c2-04063311163a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_01a025e3-70a6-7965-babb-10420fbf620a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_01a025e3-70a6-7d8e-87c2-04063311163a" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_01a025e3-70a6-7965-babb-10420fbf620a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_01a025e3-70a6-78c9-a74d-4cabe8df3867" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_01a025e3-70a6-7d8e-87c2-04063311163a" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_01a025e3-70a6-78c9-a74d-4cabe8df3867" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_01a025e3-70a6-7962-8f72-4f556799fc84" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_01a025e3-70a6-7d8e-87c2-04063311163a" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_01a025e3-70a6-7962-8f72-4f556799fc84" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingIncomeExpenseNet_01a025e3-70a6-70b5-a396-401acae7201f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherOperatingIncomeExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_01a025e3-70a6-7d8e-87c2-04063311163a" xlink:to="loc_us-gaap_OtherOperatingIncomeExpenseNet_01a025e3-70a6-70b5-a396-401acae7201f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_01a025e3-70a6-70c9-bb51-92a9ae5d1327" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_01a025e3-70a6-7d8e-87c2-04063311163a" xlink:to="loc_us-gaap_OperatingExpenses_01a025e3-70a6-70c9-bb51-92a9ae5d1327" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_01a025e3-70a6-7f7c-a797-9b7904121dc6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_OperatingIncomeLoss_01a025e3-70a6-7f7c-a797-9b7904121dc6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpenseAbstract_01a025e3-70a6-72f6-963e-3e79c6537fb6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpenseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_NonoperatingIncomeExpenseAbstract_01a025e3-70a6-72f6-963e-3e79c6537fb6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_01a025e3-70a6-7e48-af9f-1a5bef576c4d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeExpenseNonoperatingNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_01a025e3-70a6-72f6-963e-3e79c6537fb6" xlink:to="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_01a025e3-70a6-7e48-af9f-1a5bef576c4d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_01a025e3-70a6-7d24-86db-07255ae72ab0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_01a025e3-70a6-72f6-963e-3e79c6537fb6" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_01a025e3-70a6-7d24-86db-07255ae72ab0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_01a025e3-70a6-704c-adfc-0d9d3cd3c388" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_01a025e3-70a6-72f6-963e-3e79c6537fb6" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_01a025e3-70a6-704c-adfc-0d9d3cd3c388" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a025e3-70a6-72d4-9d06-0f3c7077a795" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a025e3-70a6-72d4-9d06-0f3c7077a795" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_01a025e3-70a6-73a2-bbe3-73c04ecf1dab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_01a025e3-70a6-73a2-bbe3-73c04ecf1dab" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_01a025e3-70a6-7460-a39a-c87697548808" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_01a025e3-70a6-7460-a39a-c87697548808" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_01a025e3-70a6-7f2b-869b-a3c856ce29ee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_01a025e3-70a6-7f2b-869b-a3c856ce29ee" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_01a025e3-70a6-7923-af0c-7fa2e132acfe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_ProfitLoss_01a025e3-70a6-7923-af0c-7fa2e132acfe" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_01a025e3-70a6-79f4-8e3a-5e719faa49d4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_01a025e3-70a6-79f4-8e3a-5e719faa49d4" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a025e3-70a6-7e25-aef1-cbce3c7a7cc3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_NetIncomeLoss_01a025e3-70a6-7e25-aef1-cbce3c7a7cc3" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockDividendsIncomeStatementImpact_01a025e3-70a6-7b60-9a0d-ecda61852f38" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockDividendsIncomeStatementImpact"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_PreferredStockDividendsIncomeStatementImpact_01a025e3-70a6-7b60-9a0d-ecda61852f38" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_NetIncomeLossAvailableForDistributionBasic_01a025e3-70a6-7ff4-b09c-bacab3226fd9" xlink:href="peng-20260828.xsd#peng_NetIncomeLossAvailableForDistributionBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_peng_NetIncomeLossAvailableForDistributionBasic_01a025e3-70a6-7ff4-b09c-bacab3226fd9" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_01a025e3-70a6-707a-816f-6c355147d798" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_01a025e3-70a6-707a-816f-6c355147d798" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_01a025e3-70a6-79af-aa21-3af1d39a15ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_01a025e3-70a6-79af-aa21-3af1d39a15ca" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_01a025e3-70a6-71e6-b939-7be48906629f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_01a025e3-70a6-71e6-b939-7be48906629f" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_01a025e3-70a6-72a9-9dc3-6aef87749663" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_EarningsPerShareAbstract_01a025e3-70a6-72a9-9dc3-6aef87749663" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_01a025e3-70a6-7188-9d69-0f5f6f16ada7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsPerBasicShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_01a025e3-70a6-72a9-9dc3-6aef87749663" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_01a025e3-70a6-7188-9d69-0f5f6f16ada7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_01a025e3-70a6-7242-a6ff-7a22f3ad68a4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_01a025e3-70a6-72a9-9dc3-6aef87749663" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_01a025e3-70a6-7242-a6ff-7a22f3ad68a4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_01a025e3-70a6-76f4-89ec-1eeca6a5068f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_01a025e3-70a6-72a9-9dc3-6aef87749663" xlink:to="loc_us-gaap_EarningsPerShareBasic_01a025e3-70a6-76f4-89ec-1eeca6a5068f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDilutedAbstract_01a025e3-70a6-78e7-a495-da78e24ac330" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDilutedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_EarningsPerShareDilutedAbstract_01a025e3-70a6-78e7-a495-da78e24ac330" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_01a025e3-70a6-7101-8b9c-576ecbd0b4e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_01a025e3-70a6-78e7-a495-da78e24ac330" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_01a025e3-70a6-7101-8b9c-576ecbd0b4e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_01a025e3-70a6-7571-811e-de6c11351ba6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_01a025e3-70a6-78e7-a495-da78e24ac330" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_01a025e3-70a6-7571-811e-de6c11351ba6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_01a025e3-70a6-75cd-a067-4bc2c01142dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_01a025e3-70a6-78e7-a495-da78e24ac330" xlink:to="loc_us-gaap_EarningsPerShareDiluted_01a025e3-70a6-75cd-a067-4bc2c01142dc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_01a025e3-70a6-7f4f-93b1-622b4d9e4b34" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-79c9-b749-33151d603cc9" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_01a025e3-70a6-7f4f-93b1-622b4d9e4b34" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_01a025e3-70a6-705f-a5ff-9ab35cae12da" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_01a025e3-70a6-7f4f-93b1-622b4d9e4b34" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_01a025e3-70a6-705f-a5ff-9ab35cae12da" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_01a025e3-70a6-784a-97bf-fac83ded5558" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_01a025e3-70a6-7f4f-93b1-622b4d9e4b34" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_01a025e3-70a6-784a-97bf-fac83ded5558" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/ConsolidatedStatementsofOperationsParenthetical" xlink:type="simple" xlink:href="peng-20260828.xsd#ConsolidatedStatementsofOperationsParenthetical"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/ConsolidatedStatementsofOperationsParenthetical" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_01a025e3-70a6-722e-ad42-00ecd582fbea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a025e3-70a6-7f73-8fcb-f6fe24e5394e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-722e-ad42-00ecd582fbea" xlink:to="loc_us-gaap_StatementTable_01a025e3-70a6-7f73-8fcb-f6fe24e5394e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a025e3-70a6-7ebc-9e73-d46fe710493c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a025e3-70a6-7f73-8fcb-f6fe24e5394e" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a025e3-70a6-7ebc-9e73-d46fe710493c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_01a025e3-70a6-7ebc-9e73-d46fe710493c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a025e3-70a6-7ebc-9e73-d46fe710493c" xlink:to="loc_us-gaap_RelatedPartyDomain_01a025e3-70a6-7ebc-9e73-d46fe710493c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_01a025e3-70a6-7345-9e19-bc476a1f6928" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a025e3-70a6-7ebc-9e73-d46fe710493c" xlink:to="loc_us-gaap_RelatedPartyDomain_01a025e3-70a6-7345-9e19-bc476a1f6928" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_01a025e3-70a6-784c-9e6e-d1be70280e3a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_01a025e3-70a6-7345-9e19-bc476a1f6928" xlink:to="loc_us-gaap_RelatedPartyMember_01a025e3-70a6-784c-9e6e-d1be70280e3a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_01a0f0c4-cf4e-73a8-8ce6-acdff26374b8" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a025e3-70a6-7f73-8fcb-f6fe24e5394e" xlink:to="loc_srt_ProductOrServiceAxis_01a0f0c4-cf4e-73a8-8ce6-acdff26374b8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_01a0f0c4-cf4e-73a8-8ce6-acdff26374b8_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_01a0f0c4-cf4e-73a8-8ce6-acdff26374b8" xlink:to="loc_srt_ProductsAndServicesDomain_01a0f0c4-cf4e-73a8-8ce6-acdff26374b8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_01a0f0c4-cf4e-7ebc-8907-9e3e0927a1a9" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_01a0f0c4-cf4e-73a8-8ce6-acdff26374b8" xlink:to="loc_srt_ProductsAndServicesDomain_01a0f0c4-cf4e-7ebc-8907-9e3e0927a1a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductMember_01a0f0c4-cf4e-78bf-a8fc-ed8bd1b5b1b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProductMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_01a0f0c4-cf4e-7ebc-8907-9e3e0927a1a9" xlink:to="loc_us-gaap_ProductMember_01a0f0c4-cf4e-78bf-a8fc-ed8bd1b5b1b4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServiceMember_01a0f0c4-cf4e-7288-aa1f-174c3fb9986c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_01a0f0c4-cf4e-7ebc-8907-9e3e0927a1a9" xlink:to="loc_us-gaap_ServiceMember_01a0f0c4-cf4e-7288-aa1f-174c3fb9986c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a025e3-70a6-7bca-a217-43a052732b3c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-722e-ad42-00ecd582fbea" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a025e3-70a6-7bca-a217-43a052732b3c" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/ConsolidatedStatementsofStockholdersEquity" xlink:type="simple" xlink:href="peng-20260828.xsd#ConsolidatedStatementsofStockholdersEquity"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/ConsolidatedStatementsofStockholdersEquity" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_01a025e3-70a6-7a69-b9db-83383a10cc2c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a025e3-70a6-7a71-8e78-513e3d510dc4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-7a69-b9db-83383a10cc2c" xlink:to="loc_us-gaap_StatementTable_01a025e3-70a6-7a71-8e78-513e3d510dc4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a025e3-70a6-7535-9942-5ccd7fe5d6a3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a025e3-70a6-7a71-8e78-513e3d510dc4" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a025e3-70a6-7535-9942-5ccd7fe5d6a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a025e3-70a6-7535-9942-5ccd7fe5d6a3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a025e3-70a6-7535-9942-5ccd7fe5d6a3" xlink:to="loc_us-gaap_EquityComponentDomain_01a025e3-70a6-7535-9942-5ccd7fe5d6a3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a025e3-70a6-74b5-a21d-73d47322d059" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a025e3-70a6-7535-9942-5ccd7fe5d6a3" xlink:to="loc_us-gaap_EquityComponentDomain_01a025e3-70a6-74b5-a21d-73d47322d059" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ParentMember_01a025e3-70a6-7697-bed1-9aa549351fd7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a025e3-70a6-74b5-a21d-73d47322d059" xlink:to="loc_us-gaap_ParentMember_01a025e3-70a6-7697-bed1-9aa549351fd7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_01a025e3-70a6-7c84-9b9b-8537cc82a566" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_01a025e3-70a6-7697-bed1-9aa549351fd7" xlink:to="loc_us-gaap_CommonStockMember_01a025e3-70a6-7c84-9b9b-8537cc82a566" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockMember_01a025e3-70a6-7cd4-a7d5-ebaca16cfac6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_01a025e3-70a6-7697-bed1-9aa549351fd7" xlink:to="loc_us-gaap_PreferredStockMember_01a025e3-70a6-7cd4-a7d5-ebaca16cfac6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_01a025e3-70a6-744f-a721-f852a39b019f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_01a025e3-70a6-7697-bed1-9aa549351fd7" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_01a025e3-70a6-744f-a721-f852a39b019f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_01a025e3-70a6-7c80-a58d-780c9174c401" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_01a025e3-70a6-7697-bed1-9aa549351fd7" xlink:to="loc_us-gaap_RetainedEarningsMember_01a025e3-70a6-7c80-a58d-780c9174c401" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_01a025e3-70a6-7448-99ca-977266028b52" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_01a025e3-70a6-7697-bed1-9aa549351fd7" xlink:to="loc_us-gaap_TreasuryStockCommonMember_01a025e3-70a6-7448-99ca-977266028b52" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a025e3-70a6-7dab-9e7f-7aee0527c56a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_01a025e3-70a6-7697-bed1-9aa549351fd7" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a025e3-70a6-7dab-9e7f-7aee0527c56a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_01a025e3-70a6-7a1b-97ad-b58938ce0471" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a025e3-70a6-74b5-a21d-73d47322d059" xlink:to="loc_us-gaap_NoncontrollingInterestMember_01a025e3-70a6-7a1b-97ad-b58938ce0471" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a025e3-70a6-7a69-b9db-83383a10cc2c" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_01a025e3-70a6-7d80-a9ed-83843842df91" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_01a025e3-70a6-7d80-a9ed-83843842df91" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_01a025e3-70a6-79fd-8ef1-e2b41d2f02bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:to="loc_us-gaap_PreferredStockSharesOutstanding_01a025e3-70a6-79fd-8ef1-e2b41d2f02bc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a025e3-70a6-7b49-ba44-264d00667d21" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a025e3-70a6-7b49-ba44-264d00667d21" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_01a025e3-70a6-7abb-a72d-b42c3a1952c4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:to="loc_us-gaap_ProfitLoss_01a025e3-70a6-7abb-a72d-b42c3a1952c4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_01a025e3-70a6-7da3-9c73-df39f56431d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_01a025e3-70a6-7da3-9c73-df39f56431d3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_01a025e3-70a6-7222-a706-25fc44614a62" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_01a025e3-70a6-7222-a706-25fc44614a62" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_01a025e3-70a6-7600-9f20-1fe16e621ca1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_01a025e3-70a6-7600-9f20-1fe16e621ca1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue_01a025e3-70a6-7c77-b431-61050ae3dc84" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue_01a025e3-70a6-7c77-b431-61050ae3dc84" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_01a046f4-a2b3-7e06-82e7-94885e9591e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_01a046f4-a2b3-7e06-82e7-94885e9591e4" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_01a046f4-2f30-7592-9cf8-34900566e033" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_01a046f4-2f30-7592-9cf8-34900566e033" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCalls_01a025e3-70a6-7cf6-94be-679a0b7a8ea3" xlink:href="peng-20260828.xsd#peng_AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCalls"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:to="loc_peng_AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCalls_01a025e3-70a6-7cf6-94be-679a0b7a8ea3" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_01a025e3-70a6-7108-9e0c-c057db23dcea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_01a025e3-70a6-7108-9e0c-c057db23dcea" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_StockIssuedDuringPeriodPreferredStockShares_01a025e3-70a6-7ebc-920c-c204dfbc1b84" xlink:href="peng-20260828.xsd#peng_StockIssuedDuringPeriodPreferredStockShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:to="loc_peng_StockIssuedDuringPeriodPreferredStockShares_01a025e3-70a6-7ebc-920c-c204dfbc1b84" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_StockIssuedDuringPeriodPreferredStockAmount_01a025e3-70a6-7968-8dc3-f9b3ac161a46" xlink:href="peng-20260828.xsd#peng_StockIssuedDuringPeriodPreferredStockAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:to="loc_peng_StockIssuedDuringPeriodPreferredStockAmount_01a025e3-70a6-7968-8dc3-f9b3ac161a46" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_01a025e3-70a6-7825-bf5d-bb3e4d7fa2aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:to="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_01a025e3-70a6-7825-bf5d-bb3e4d7fa2aa" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsPreferredStock_01a025e3-70a6-7995-b6b0-48175be4c5c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendsPreferredStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:to="loc_us-gaap_DividendsPreferredStock_01a025e3-70a6-7995-b6b0-48175be4c5c3" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_ReclassificationsOfPermanentToTemporaryEquityShares_01a025e3-70a6-74ae-8952-716097850579" xlink:href="peng-20260828.xsd#peng_ReclassificationsOfPermanentToTemporaryEquityShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:to="loc_peng_ReclassificationsOfPermanentToTemporaryEquityShares_01a025e3-70a6-74ae-8952-716097850579" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_ReclassificationsOfPermanentToTemporaryEquity_01a025e3-70a6-77a8-a764-67cf7ec11c47" xlink:href="peng-20260828.xsd#peng_ReclassificationsOfPermanentToTemporaryEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a025e3-70a6-741a-a72a-fd9bb4fa35d1" xlink:to="loc_peng_ReclassificationsOfPermanentToTemporaryEquity_01a025e3-70a6-77a8-a764-67cf7ec11c47" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_01a025e3-70a6-793a-92f6-cd64864184af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_01a025e3-70a6-792b-b7d6-954238a1295b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a025e3-70a6-7832-9664-12952731813a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/ConsolidatedStatementsofCashFlowsParenthetical" xlink:type="simple" xlink:href="peng-20260828.xsd#ConsolidatedStatementsofCashFlowsParenthetical"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/ConsolidatedStatementsofCashFlowsParenthetical" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_01a13d95-8603-7104-bc69-c563e6f99e59" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a13d95-8603-76b3-8f5c-10cc64e95053" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a13d95-8603-7104-bc69-c563e6f99e59" xlink:to="loc_us-gaap_StatementTable_01a13d95-8603-76b3-8f5c-10cc64e95053" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a13d95-8603-7ea9-8191-8c04f63df07c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a13d95-8603-76b3-8f5c-10cc64e95053" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a13d95-8603-7ea9-8191-8c04f63df07c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_01a13d95-8603-7ea9-8191-8c04f63df07c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a13d95-8603-7ea9-8191-8c04f63df07c" xlink:to="loc_us-gaap_RelatedPartyDomain_01a13d95-8603-7ea9-8191-8c04f63df07c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_01a13d95-8603-7d21-a6d2-51072714aeee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a13d95-8603-7ea9-8191-8c04f63df07c" xlink:to="loc_us-gaap_RelatedPartyDomain_01a13d95-8603-7d21-a6d2-51072714aeee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_01a13d95-8603-77cb-837d-b116c8f82757" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_01a13d95-8603-7d21-a6d2-51072714aeee" xlink:to="loc_us-gaap_RelatedPartyMember_01a13d95-8603-77cb-837d-b116c8f82757" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_01a13d95-8603-7c4c-b27c-3b1e62d81302" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a13d95-8603-7104-bc69-c563e6f99e59" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_01a13d95-8603-7c4c-b27c-3b1e62d81302" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/SignificantAccountingPoliciesDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#SignificantAccountingPoliciesDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/SignificantAccountingPoliciesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_peng_SignificantAccountingPoliciesLineItems_01a025e3-70a6-79b0-9c40-e8ecc752a076" xlink:href="peng-20260828.xsd#peng_SignificantAccountingPoliciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SignificantAccountingPoliciesTable_01a025e3-70a6-70e0-b4e7-2e3f336aa391" xlink:href="peng-20260828.xsd#peng_SignificantAccountingPoliciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_peng_SignificantAccountingPoliciesLineItems_01a025e3-70a6-79b0-9c40-e8ecc752a076" xlink:to="loc_peng_SignificantAccountingPoliciesTable_01a025e3-70a6-70e0-b4e7-2e3f336aa391" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a025e3-70a6-7f4e-bab2-d95819a03bf6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_peng_SignificantAccountingPoliciesTable_01a025e3-70a6-70e0-b4e7-2e3f336aa391" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a025e3-70a6-7f4e-bab2-d95819a03bf6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a025e3-70a6-7f4e-bab2-d95819a03bf6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a025e3-70a6-7f4e-bab2-d95819a03bf6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a025e3-70a6-7f4e-bab2-d95819a03bf6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a025e3-70a6-79ab-b03c-daef6506f620" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a025e3-70a6-7f4e-bab2-d95819a03bf6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a025e3-70a6-79ab-b03c-daef6506f620" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TechnologyBasedIntangibleAssetsMember_01a025e3-70a6-7263-9eda-0832882a6da0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TechnologyBasedIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a025e3-70a6-79ab-b03c-daef6506f620" xlink:to="loc_us-gaap_TechnologyBasedIntangibleAssetsMember_01a025e3-70a6-7263-9eda-0832882a6da0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_01a025e3-70a6-71d8-9273-aad3a7259ea2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a025e3-70a6-79ab-b03c-daef6506f620" xlink:to="loc_us-gaap_CustomerRelationshipsMember_01a025e3-70a6-71d8-9273-aad3a7259ea2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TrademarksAndTradeNamesMember_01a025e3-70a6-7b57-9ae2-d8c213a0bf28" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TrademarksAndTradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a025e3-70a6-79ab-b03c-daef6506f620" xlink:to="loc_us-gaap_TrademarksAndTradeNamesMember_01a025e3-70a6-7b57-9ae2-d8c213a0bf28" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a025e3-70a6-7808-8144-0ca5012e85fd" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_peng_SignificantAccountingPoliciesTable_01a025e3-70a6-70e0-b4e7-2e3f336aa391" xlink:to="loc_srt_RangeAxis_01a025e3-70a6-7808-8144-0ca5012e85fd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a025e3-70a6-7808-8144-0ca5012e85fd_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a025e3-70a6-7808-8144-0ca5012e85fd" xlink:to="loc_srt_RangeMember_01a025e3-70a6-7808-8144-0ca5012e85fd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a025e3-70a6-73e3-8c43-64784bed85f2" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a025e3-70a6-7808-8144-0ca5012e85fd" xlink:to="loc_srt_RangeMember_01a025e3-70a6-73e3-8c43-64784bed85f2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a025e3-70a6-7e75-ab31-a03eddaa6c43" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a025e3-70a6-73e3-8c43-64784bed85f2" xlink:to="loc_srt_MinimumMember_01a025e3-70a6-7e75-ab31-a03eddaa6c43" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a025e3-70a6-785f-8988-3273a779fa9c" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a025e3-70a6-73e3-8c43-64784bed85f2" xlink:to="loc_srt_MaximumMember_01a025e3-70a6-785f-8988-3273a779fa9c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a025e3-70a6-789e-9d71-43f30035507f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_peng_SignificantAccountingPoliciesTable_01a025e3-70a6-70e0-b4e7-2e3f336aa391" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a025e3-70a6-789e-9d71-43f30035507f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a025e3-70a6-789e-9d71-43f30035507f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a025e3-70a6-789e-9d71-43f30035507f" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a025e3-70a6-789e-9d71-43f30035507f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a025e3-70a6-70f7-b391-533dedf7ecf7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a025e3-70a6-789e-9d71-43f30035507f" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a025e3-70a6-70f7-b391-533dedf7ecf7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquipmentMember_01a025e3-70a6-7141-a8e5-cd1d74dc9cd0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a025e3-70a6-70f7-b391-533dedf7ecf7" xlink:to="loc_us-gaap_EquipmentMember_01a025e3-70a6-7141-a8e5-cd1d74dc9cd0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_01a025e3-70a6-7bdc-8036-1ce62c869821" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BuildingAndBuildingImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a025e3-70a6-70f7-b391-533dedf7ecf7" xlink:to="loc_us-gaap_BuildingAndBuildingImprovementsMember_01a025e3-70a6-7bdc-8036-1ce62c869821" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_FurnitureFixturesAndSoftwareMember_01a025e3-70a6-7664-8152-a67a6cb8eafd" xlink:href="peng-20260828.xsd#peng_FurnitureFixturesAndSoftwareMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a025e3-70a6-70f7-b391-533dedf7ecf7" xlink:to="loc_peng_FurnitureFixturesAndSoftwareMember_01a025e3-70a6-7664-8152-a67a6cb8eafd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_01a025e3-70a6-7978-901a-2cda150de85d" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_peng_SignificantAccountingPoliciesTable_01a025e3-70a6-70e0-b4e7-2e3f336aa391" xlink:to="loc_srt_OwnershipAxis_01a025e3-70a6-7978-901a-2cda150de85d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_01a025e3-70a6-7978-901a-2cda150de85d_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_01a025e3-70a6-7978-901a-2cda150de85d" xlink:to="loc_srt_OwnershipDomain_01a025e3-70a6-7978-901a-2cda150de85d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_01a025e3-70a6-7260-9207-139835287fc1" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_01a025e3-70a6-7978-901a-2cda150de85d" xlink:to="loc_srt_OwnershipDomain_01a025e3-70a6-7260-9207-139835287fc1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SMARTBrazilMember_01a025e3-70a6-7eea-9d8e-da8fd1d2b052" xlink:href="peng-20260828.xsd#peng_SMARTBrazilMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_01a025e3-70a6-7260-9207-139835287fc1" xlink:to="loc_peng_SMARTBrazilMember_01a025e3-70a6-7eea-9d8e-da8fd1d2b052" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_01a025e3-70a6-782a-b093-a224f4b5ccab" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_peng_SignificantAccountingPoliciesTable_01a025e3-70a6-70e0-b4e7-2e3f336aa391" xlink:to="loc_dei_LegalEntityAxis_01a025e3-70a6-782a-b093-a224f4b5ccab" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a025e3-70a6-782a-b093-a224f4b5ccab_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_01a025e3-70a6-782a-b093-a224f4b5ccab" xlink:to="loc_dei_EntityDomain_01a025e3-70a6-782a-b093-a224f4b5ccab_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a025e3-70a6-76df-bed5-1f2138e3a3c7" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_01a025e3-70a6-782a-b093-a224f4b5ccab" xlink:to="loc_dei_EntityDomain_01a025e3-70a6-76df-bed5-1f2138e3a3c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_LexarEuropeBVMember_01a025e3-70a6-784a-9f10-9a6b15e98a38" xlink:href="peng-20260828.xsd#peng_LexarEuropeBVMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_01a025e3-70a6-76df-bed5-1f2138e3a3c7" xlink:to="loc_peng_LexarEuropeBVMember_01a025e3-70a6-784a-9f10-9a6b15e98a38" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_StockRepurchaseAgreementOwnershipRightsPercent_01a025e3-70a6-77cc-a42e-2f9cd14961d4" xlink:href="peng-20260828.xsd#peng_StockRepurchaseAgreementOwnershipRightsPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_SignificantAccountingPoliciesLineItems_01a025e3-70a6-79b0-9c40-e8ecc752a076" xlink:to="loc_peng_StockRepurchaseAgreementOwnershipRightsPercent_01a025e3-70a6-77cc-a42e-2f9cd14961d4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPaidNet_01a025e3-70a6-74ce-8ac0-c909198517c4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestPaidNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_SignificantAccountingPoliciesLineItems_01a025e3-70a6-79b0-9c40-e8ecc752a076" xlink:to="loc_us-gaap_InterestPaidNet_01a025e3-70a6-74ce-8ac0-c909198517c4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_01a025e3-70a6-7105-b65d-3fa5ed06311f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_SignificantAccountingPoliciesLineItems_01a025e3-70a6-79b0-9c40-e8ecc752a076" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_01a025e3-70a6-7105-b65d-3fa5ed06311f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_01a025e3-70a6-7894-9158-c16e536efb5c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_SignificantAccountingPoliciesLineItems_01a025e3-70a6-79b0-9c40-e8ecc752a076" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_01a025e3-70a6-7894-9158-c16e536efb5c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_01a025e3-70a6-72d2-ab5d-a016b9d10b11" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_SignificantAccountingPoliciesLineItems_01a025e3-70a6-79b0-9c40-e8ecc752a076" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_01a025e3-70a6-72d2-ab5d-a016b9d10b11" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_ContractWithCustomerAmortizationPeriod_01a025e3-70a6-775a-83fd-004dbf53619b" xlink:href="peng-20260828.xsd#peng_ContractWithCustomerAmortizationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_SignificantAccountingPoliciesLineItems_01a025e3-70a6-79b0-9c40-e8ecc752a076" xlink:to="loc_peng_ContractWithCustomerAmortizationPeriod_01a025e3-70a6-775a-83fd-004dbf53619b" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/PreferredStockInvestmentDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#PreferredStockInvestmentDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/PreferredStockInvestmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-70a6-7060-800d-78c241857cfc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OptionIndexedToIssuersEquityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OptionIndexedToIssuersEquityEquityTable_01a025e3-70a6-77e9-88d0-3481cf0b2501" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OptionIndexedToIssuersEquityEquityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-70a6-7060-800d-78c241857cfc" xlink:to="loc_us-gaap_OptionIndexedToIssuersEquityEquityTable_01a025e3-70a6-77e9-88d0-3481cf0b2501" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_01a025e3-70a6-736c-8554-997e09dea53a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityEquityTable_01a025e3-70a6-77e9-88d0-3481cf0b2501" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_01a025e3-70a6-736c-8554-997e09dea53a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a025e3-70a6-736c-8554-997e09dea53a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_01a025e3-70a6-736c-8554-997e09dea53a" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a025e3-70a6-736c-8554-997e09dea53a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a025e3-70a6-7739-8522-2200aa240bd7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_01a025e3-70a6-736c-8554-997e09dea53a" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a025e3-70a6-7739-8522-2200aa240bd7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrivatePlacementMember_01a025e3-70a6-744c-b993-8c1ea7cdf1b0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrivatePlacementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a025e3-70a6-7739-8522-2200aa240bd7" xlink:to="loc_us-gaap_PrivatePlacementMember_01a025e3-70a6-744c-b993-8c1ea7cdf1b0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_01a025e3-70a6-78c3-bb8c-52e1af1004b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityEquityTable_01a025e3-70a6-77e9-88d0-3481cf0b2501" xlink:to="loc_us-gaap_StatementClassOfStockAxis_01a025e3-70a6-78c3-bb8c-52e1af1004b4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a025e3-70a6-78c3-bb8c-52e1af1004b4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a025e3-70a6-78c3-bb8c-52e1af1004b4" xlink:to="loc_us-gaap_ClassOfStockDomain_01a025e3-70a6-78c3-bb8c-52e1af1004b4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a025e3-70a6-718e-bd2a-23411c9f56d5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a025e3-70a6-78c3-bb8c-52e1af1004b4" xlink:to="loc_us-gaap_ClassOfStockDomain_01a025e3-70a6-718e-bd2a-23411c9f56d5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertiblePreferredStockMember_01a025e3-70a6-7044-99e2-e1a917bfef60" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConvertiblePreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a025e3-70a6-718e-bd2a-23411c9f56d5" xlink:to="loc_us-gaap_ConvertiblePreferredStockMember_01a025e3-70a6-7044-99e2-e1a917bfef60" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_01a025e3-70a6-7ae7-a309-b548c7029426" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-70a6-7060-800d-78c241857cfc" xlink:to="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_01a025e3-70a6-7ae7-a309-b548c7029426" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_01a025e3-70a6-7a13-9e40-fd6219c565ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-70a6-7060-800d-78c241857cfc" xlink:to="loc_us-gaap_PreferredStockParOrStatedValuePerShare_01a025e3-70a6-7a13-9e40-fd6219c565ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockPricePerShare_01a025e3-70a6-76c7-b8a7-f4125eeadc8d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockPricePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-70a6-7060-800d-78c241857cfc" xlink:to="loc_us-gaap_SaleOfStockPricePerShare_01a025e3-70a6-76c7-b8a7-f4125eeadc8d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_01a025e3-70a6-7a6b-bb8f-6846a8d8fa07" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockConsiderationReceivedOnTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-70a6-7060-800d-78c241857cfc" xlink:to="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_01a025e3-70a6-7a6b-bb8f-6846a8d8fa07" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_01a0471d-d14d-7270-bd25-5be5ce585f71" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-70a6-7060-800d-78c241857cfc" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_01a0471d-d14d-7270-bd25-5be5ce585f71" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SaleOfStockLiquidationPreference_01a025e3-70a6-7440-a3f5-9bb53190ecdf" xlink:href="peng-20260828.xsd#peng_SaleOfStockLiquidationPreference"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-70a6-7060-800d-78c241857cfc" xlink:to="loc_peng_SaleOfStockLiquidationPreference_01a025e3-70a6-7440-a3f5-9bb53190ecdf" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SaleOfStockNumberOfRedemptionInstallments_01a025e3-70a6-7d2c-befd-e3f08acbecf7" xlink:href="peng-20260828.xsd#peng_SaleOfStockNumberOfRedemptionInstallments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-70a6-7060-800d-78c241857cfc" xlink:to="loc_peng_SaleOfStockNumberOfRedemptionInstallments_01a025e3-70a6-7d2c-befd-e3f08acbecf7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SaleOfStockRedemptionNoticeMinimumPeriodThreshold_01a025e3-70a6-76b1-8751-4a4978f3e33d" xlink:href="peng-20260828.xsd#peng_SaleOfStockRedemptionNoticeMinimumPeriodThreshold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-70a6-7060-800d-78c241857cfc" xlink:to="loc_peng_SaleOfStockRedemptionNoticeMinimumPeriodThreshold_01a025e3-70a6-76b1-8751-4a4978f3e33d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockDividendRatePercentage_01a025e3-70a6-7fd2-91b8-1604eb3b82da" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockDividendRatePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-70a6-7060-800d-78c241857cfc" xlink:to="loc_us-gaap_PreferredStockDividendRatePercentage_01a025e3-70a6-7fd2-91b8-1604eb3b82da" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SaleOfStockConvertibleThresholdConsecutiveTradingDays_01a025e3-70a6-7a31-b55a-7307faf23bbd" xlink:href="peng-20260828.xsd#peng_SaleOfStockConvertibleThresholdConsecutiveTradingDays"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-70a6-7060-800d-78c241857cfc" xlink:to="loc_peng_SaleOfStockConvertibleThresholdConsecutiveTradingDays_01a025e3-70a6-7a31-b55a-7307faf23bbd" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_PreferredStockConvertibleConversionPriceThresholdPercentage_01a025e3-70a6-7aa8-9e6d-18cb132f5b68" xlink:href="peng-20260828.xsd#peng_PreferredStockConvertibleConversionPriceThresholdPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-70a6-7060-800d-78c241857cfc" xlink:to="loc_peng_PreferredStockConvertibleConversionPriceThresholdPercentage_01a025e3-70a6-7aa8-9e6d-18cb132f5b68" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockConvertibleConversionPrice_01a025e3-70a6-7ec0-8635-88a77192c2f9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockConvertibleConversionPrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-70a6-7060-800d-78c241857cfc" xlink:to="loc_us-gaap_PreferredStockConvertibleConversionPrice_01a025e3-70a6-7ec0-8635-88a77192c2f9" xlink:type="arc" order="11"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/DivestitureofSMARTBrazilAdditionalInformationDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#DivestitureofSMARTBrazilAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/DivestitureofSMARTBrazilAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-742d-ae28-72548af3e9c4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-742d-ae28-72548af3e9c4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_01a025e3-70a6-7cee-b9f7-9735e9e17093" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-742d-ae28-72548af3e9c4" xlink:to="loc_srt_OwnershipAxis_01a025e3-70a6-7cee-b9f7-9735e9e17093" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_01a025e3-70a6-7cee-b9f7-9735e9e17093_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_01a025e3-70a6-7cee-b9f7-9735e9e17093" xlink:to="loc_srt_OwnershipDomain_01a025e3-70a6-7cee-b9f7-9735e9e17093_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_01a025e3-70a6-7029-b507-a97ff913e553" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_01a025e3-70a6-7cee-b9f7-9735e9e17093" xlink:to="loc_srt_OwnershipDomain_01a025e3-70a6-7029-b507-a97ff913e553" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SMARTBrazilMember_01a025e3-70a6-7ba8-8222-6c28b4de7478" xlink:href="peng-20260828.xsd#peng_SMARTBrazilMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_01a025e3-70a6-7029-b507-a97ff913e553" xlink:to="loc_peng_SMARTBrazilMember_01a025e3-70a6-7ba8-8222-6c28b4de7478" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_01a025e3-70a6-7919-8c80-c0560662f96a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-742d-ae28-72548af3e9c4" xlink:to="loc_dei_LegalEntityAxis_01a025e3-70a6-7919-8c80-c0560662f96a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a025e3-70a6-7919-8c80-c0560662f96a_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_01a025e3-70a6-7919-8c80-c0560662f96a" xlink:to="loc_dei_EntityDomain_01a025e3-70a6-7919-8c80-c0560662f96a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a025e3-70a6-7a40-aeac-3f2d0f74943f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_01a025e3-70a6-7919-8c80-c0560662f96a" xlink:to="loc_dei_EntityDomain_01a025e3-70a6-7a40-aeac-3f2d0f74943f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_LexarEuropeBVMember_01a025e3-70a6-735c-adc8-ca7ce297f672" xlink:href="peng-20260828.xsd#peng_LexarEuropeBVMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_01a025e3-70a6-7a40-aeac-3f2d0f74943f" xlink:to="loc_peng_LexarEuropeBVMember_01a025e3-70a6-735c-adc8-ca7ce297f672" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_01a025e3-70a6-7a79-a2c1-a058144e60fa" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-742d-ae28-72548af3e9c4" xlink:to="loc_srt_ConsolidatedEntitiesAxis_01a025e3-70a6-7a79-a2c1-a058144e60fa" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_01a025e3-70a6-7a79-a2c1-a058144e60fa_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_01a025e3-70a6-7a79-a2c1-a058144e60fa" xlink:to="loc_srt_ConsolidatedEntitiesDomain_01a025e3-70a6-7a79-a2c1-a058144e60fa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_01a025e3-70a6-7b2e-b6e7-48f1be9c1a3e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_01a025e3-70a6-7a79-a2c1-a058144e60fa" xlink:to="loc_srt_ConsolidatedEntitiesDomain_01a025e3-70a6-7b2e-b6e7-48f1be9c1a3e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SMARTBrazilMember_01a025e3-70a6-7fdc-8360-08c9a968cc36" xlink:href="peng-20260828.xsd#peng_SMARTBrazilMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_01a025e3-70a6-7b2e-b6e7-48f1be9c1a3e" xlink:to="loc_peng_SMARTBrazilMember_01a025e3-70a6-7fdc-8360-08c9a968cc36" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_01a025e3-70a6-7d30-a4c7-2a1204856716" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-742d-ae28-72548af3e9c4" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_01a025e3-70a6-7d30-a4c7-2a1204856716" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_01a025e3-70a6-7d30-a4c7-2a1204856716_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_01a025e3-70a6-7d30-a4c7-2a1204856716" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_01a025e3-70a6-7d30-a4c7-2a1204856716_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_01a025e3-70a6-72ed-9caf-984d302dcc80" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_01a025e3-70a6-7d30-a4c7-2a1204856716" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_01a025e3-70a6-72ed-9caf-984d302dcc80" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationsDisposedOfBySaleMember_01a025e3-70a6-716c-9c9b-c2bf163c98d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DiscontinuedOperationsDisposedOfBySaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_01a025e3-70a6-72ed-9caf-984d302dcc80" xlink:to="loc_us-gaap_DiscontinuedOperationsDisposedOfBySaleMember_01a025e3-70a6-716c-9c9b-c2bf163c98d3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_01a025e3-70a6-7d66-abd4-9c8b3e99f6bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-742d-ae28-72548af3e9c4" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_01a025e3-70a6-7d66-abd4-9c8b3e99f6bb" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_01a025e3-70a6-7d66-abd4-9c8b3e99f6bb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_01a025e3-70a6-7d66-abd4-9c8b3e99f6bb" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_01a025e3-70a6-7d66-abd4-9c8b3e99f6bb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_01a025e3-70a6-7905-ad01-d3b8ef8b3ccb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_01a025e3-70a6-7d66-abd4-9c8b3e99f6bb" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_01a025e3-70a6-7905-ad01-d3b8ef8b3ccb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SMARTBrazilMember_01a025e3-70a6-7eec-9d24-0a3985db3d46" xlink:href="peng-20260828.xsd#peng_SMARTBrazilMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_01a025e3-70a6-7905-ad01-d3b8ef8b3ccb" xlink:to="loc_peng_SMARTBrazilMember_01a025e3-70a6-7eec-9d24-0a3985db3d46" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a025e3-70a6-7d1d-a479-9f9d495c4fa4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-742d-ae28-72548af3e9c4" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a025e3-70a6-7d1d-a479-9f9d495c4fa4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a025e3-70a6-7d1d-a479-9f9d495c4fa4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a025e3-70a6-7d1d-a479-9f9d495c4fa4" xlink:to="loc_us-gaap_EquityComponentDomain_01a025e3-70a6-7d1d-a479-9f9d495c4fa4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a025e3-70a6-7eea-b88a-89209cd0bea7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a025e3-70a6-7d1d-a479-9f9d495c4fa4" xlink:to="loc_us-gaap_EquityComponentDomain_01a025e3-70a6-7eea-b88a-89209cd0bea7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ParentMember_01a025e3-70a6-77d0-8808-42cf2e074a76" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a025e3-70a6-7eea-b88a-89209cd0bea7" xlink:to="loc_us-gaap_ParentMember_01a025e3-70a6-77d0-8808-42cf2e074a76" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_StockRepurchaseAgreementOwnershipRightsPercent_01a025e3-70a6-7db0-a562-9681d365e180" xlink:href="peng-20260828.xsd#peng_StockRepurchaseAgreementOwnershipRightsPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_peng_StockRepurchaseAgreementOwnershipRightsPercent_01a025e3-70a6-7db0-a562-9681d365e180" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TotalEnterpriseValue_01a025e3-70a6-79ff-8b7d-9007cde88b0a" xlink:href="peng-20260828.xsd#peng_TotalEnterpriseValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_peng_TotalEnterpriseValue_01a025e3-70a6-79ff-8b7d-9007cde88b0a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DivestitureOfInterestInConsolidatedSubsidiaryPaymentDeferralDuration_01a025e3-70a6-79ae-b69f-83f34fb9aa03" xlink:href="peng-20260828.xsd#peng_DivestitureOfInterestInConsolidatedSubsidiaryPaymentDeferralDuration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_peng_DivestitureOfInterestInConsolidatedSubsidiaryPaymentDeferralDuration_01a025e3-70a6-79ae-b69f-83f34fb9aa03" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_01a025e3-70a6-7f5c-ade3-397af395f6b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_01a025e3-70a6-7f5c-ade3-397af395f6b3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries_01a025e3-70a6-7879-b941-6e70f1b8dde4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries_01a025e3-70a6-7879-b941-6e70f1b8dde4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1_01a025e3-70a6-712f-bc75-0e80102f7fe0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_us-gaap_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1_01a025e3-70a6-712f-bc75-0e80102f7fe0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceivedAdjustment_01a025e3-70a6-71ed-89b3-f84d36fca4fe" xlink:href="peng-20260828.xsd#peng_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceivedAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_peng_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceivedAdjustment_01a025e3-70a6-71ed-89b3-f84d36fca4fe" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceivedDeferredPayment_01a025e3-70a6-72b7-a3f1-2e5f26488cfb" xlink:href="peng-20260828.xsd#peng_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceivedDeferredPayment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_peng_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceivedDeferredPayment_01a025e3-70a6-72b7-a3f1-2e5f26488cfb" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceivedDiscountRate_01a025e3-70a6-7e0d-ab4a-263210d6094a" xlink:href="peng-20260828.xsd#peng_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceivedDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_peng_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceivedDiscountRate_01a025e3-70a6-7e0d-ab4a-263210d6094a" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceivedDeferredNetCashAdjustmentNotionalAmount_01a025e3-70a6-7966-a37e-f2660c27b550" xlink:href="peng-20260828.xsd#peng_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceivedDeferredNetCashAdjustmentNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_peng_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceivedDeferredNetCashAdjustmentNotionalAmount_01a025e3-70a6-7966-a37e-f2660c27b550" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceivedDeferredNetCashAdjustmentDiscountRate_01a025e3-70a6-7531-b65e-6288a46d46f0" xlink:href="peng-20260828.xsd#peng_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceivedDeferredNetCashAdjustmentDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_peng_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceivedDeferredNetCashAdjustmentDiscountRate_01a025e3-70a6-7531-b65e-6288a46d46f0" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DivestitureOfInterestInConsolidatedSubsidiaryPutOptionExerciseWindows_01a025e3-70a6-7800-8132-8cbdea1fc078" xlink:href="peng-20260828.xsd#peng_DivestitureOfInterestInConsolidatedSubsidiaryPutOptionExerciseWindows"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_peng_DivestitureOfInterestInConsolidatedSubsidiaryPutOptionExerciseWindows_01a025e3-70a6-7800-8132-8cbdea1fc078" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TotalEnterpriseValuePercentage_01a025e3-70a6-7efa-b4b0-e3654d61466b" xlink:href="peng-20260828.xsd#peng_TotalEnterpriseValuePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_peng_TotalEnterpriseValuePercentage_01a025e3-70a6-7efa-b4b0-e3654d61466b" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_NetIncomeRatio_01a025e3-70a6-78ac-af9e-d30a326f4f59" xlink:href="peng-20260828.xsd#peng_NetIncomeRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_peng_NetIncomeRatio_01a025e3-70a6-78ac-af9e-d30a326f4f59" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_StockRepurchaseAgreementOwnershipRightsSoldPercent_01a1559b-525b-7318-93dd-5f910df9385d" xlink:href="peng-20260828.xsd#peng_StockRepurchaseAgreementOwnershipRightsSoldPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_peng_StockRepurchaseAgreementOwnershipRightsSoldPercent_01a1559b-525b-7318-93dd-5f910df9385d" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_01a025e3-70a6-72c4-b9d9-6f7d7dbeb495" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_01a025e3-70a6-72c4-b9d9-6f7d7dbeb495" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax_01a025e3-70a6-7a26-834b-951cb3edb701" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax_01a025e3-70a6-7a26-834b-951cb3edb701" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationTaxEffectOfIncomeLossFromDisposalOfDiscontinuedOperation_01a025e3-70a6-7d1f-8c87-b5d63552e03b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DiscontinuedOperationTaxEffectOfIncomeLossFromDisposalOfDiscontinuedOperation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-76d3-a3ea-c74338e36aa3" xlink:to="loc_us-gaap_DiscontinuedOperationTaxEffectOfIncomeLossFromDisposalOfDiscontinuedOperation_01a025e3-70a6-7d1f-8c87-b5d63552e03b" xlink:type="arc" order="17"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/DivestitureofSMARTBrazilAssetsandLiabilitiesofBrazilOperationsDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#DivestitureofSMARTBrazilAssetsandLiabilitiesofBrazilOperationsDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/DivestitureofSMARTBrazilAssetsandLiabilitiesofBrazilOperationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-74a9-92bd-357f83910799" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-7d02-af24-df044a54167b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-74a9-92bd-357f83910799" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-7d02-af24-df044a54167b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_01a025e3-70a6-7ffb-a16d-7962457d6636" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-7d02-af24-df044a54167b" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_01a025e3-70a6-7ffb-a16d-7962457d6636" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_01a025e3-70a6-7ffb-a16d-7962457d6636_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_01a025e3-70a6-7ffb-a16d-7962457d6636" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_01a025e3-70a6-7ffb-a16d-7962457d6636_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_01a025e3-70a6-71b5-944c-381024f42cc9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_01a025e3-70a6-7ffb-a16d-7962457d6636" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_01a025e3-70a6-71b5-944c-381024f42cc9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationsHeldforsaleMember_01a025e3-70a6-7b9f-a762-bd992e5cc03f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DiscontinuedOperationsHeldforsaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_01a025e3-70a6-71b5-944c-381024f42cc9" xlink:to="loc_us-gaap_DiscontinuedOperationsHeldforsaleMember_01a025e3-70a6-7b9f-a762-bd992e5cc03f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationsDisposedOfBySaleMember_01a025e3-70a6-7d08-b5e5-eaaab146dcad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DiscontinuedOperationsDisposedOfBySaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_01a025e3-70a6-71b5-944c-381024f42cc9" xlink:to="loc_us-gaap_DiscontinuedOperationsDisposedOfBySaleMember_01a025e3-70a6-7d08-b5e5-eaaab146dcad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-74a9-92bd-357f83910799" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalentsGross_01a025e3-70a6-7546-a7bd-71a4dfc300a1" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalentsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalentsGross_01a025e3-70a6-7546-a7bd-71a4dfc300a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableGross_01a025e3-70a6-7cf1-bb81-a4230e9eb176" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableGross_01a025e3-70a6-7cf1-bb81-a4230e9eb176" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationInventoryCurrentGross_01a025e3-70a6-723b-81f0-ce8d366b693c" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationInventoryCurrentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationInventoryCurrentGross_01a025e3-70a6-723b-81f0-ce8d366b693c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationOtherAssetsCurrentGross_01a025e3-70a6-777a-b27a-5b25437b9e7c" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationOtherAssetsCurrentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationOtherAssetsCurrentGross_01a025e3-70a6-777a-b27a-5b25437b9e7c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationAssetsBeforeImpairmentCurrent_01a025e3-70a6-7aac-b433-1620ca3cfc87" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationAssetsBeforeImpairmentCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationAssetsBeforeImpairmentCurrent_01a025e3-70a6-7aac-b433-1620ca3cfc87" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNoncurrentGross_01a025e3-70a6-79a2-a0cc-b6d741ecc5c3" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNoncurrentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNoncurrentGross_01a025e3-70a6-79a2-a0cc-b6d741ecc5c3" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseRightOfUseAssetsNoncurrentGross_01a025e3-70a6-7cdd-996e-099285de50ec" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseRightOfUseAssetsNoncurrentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseRightOfUseAssetsNoncurrentGross_01a025e3-70a6-7cdd-996e-099285de50ec" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationGoodwillNoncurrentGross_01a025e3-70a6-759f-893a-d0aab9f336fe" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationGoodwillNoncurrentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationGoodwillNoncurrentGross_01a025e3-70a6-759f-893a-d0aab9f336fe" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationOtherAssetsNoncurrentGross_01a025e3-70a6-76c0-90b9-3f531a65951b" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationOtherAssetsNoncurrentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationOtherAssetsNoncurrentGross_01a025e3-70a6-76c0-90b9-3f531a65951b" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationAssetsGross_01a025e3-70a6-7379-b209-0c791709ecc7" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationAssetsGross_01a025e3-70a6-7379-b209-0c791709ecc7" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationAggregateAssetImpairmentCharge_01a025e3-70a6-7337-8225-0d28c5a0e704" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationAggregateAssetImpairmentCharge"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationAggregateAssetImpairmentCharge_01a025e3-70a6-7337-8225-0d28c5a0e704" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_01a025e3-70a6-7049-b7cf-adb305fd3a59" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_01a025e3-70a6-7049-b7cf-adb305fd3a59" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationAccountsPayableAndAccruedLiabilitiesCurrentGross_01a025e3-70a6-7248-b46e-dc982b3561a3" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationAccountsPayableAndAccruedLiabilitiesCurrentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationAccountsPayableAndAccruedLiabilitiesCurrentGross_01a025e3-70a6-7248-b46e-dc982b3561a3" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationDebtCurrentGross_01a025e3-70a6-7d7c-b14e-82be751b7d68" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationDebtCurrentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationDebtCurrentGross_01a025e3-70a6-7d7c-b14e-82be751b7d68" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationOtherLiabilitiesCurrentGross_01a025e3-70a6-7fa6-88da-30cc57954a9a" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationOtherLiabilitiesCurrentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationOtherLiabilitiesCurrentGross_01a025e3-70a6-7fa6-88da-30cc57954a9a" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationLiabilitiesCurrentGross_01a025e3-70a6-745e-b8a7-903b8bc1abcc" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationLiabilitiesCurrentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationLiabilitiesCurrentGross_01a025e3-70a6-745e-b8a7-903b8bc1abcc" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationDebtNoncurrent_01a025e3-70a6-72da-93b7-7c9dc90cef76" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationDebtNoncurrent_01a025e3-70a6-72da-93b7-7c9dc90cef76" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiabilitiesNoncurrent_01a025e3-70a6-7b9e-81fe-debd7b9b46c9" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiabilitiesNoncurrent_01a025e3-70a6-7b9e-81fe-debd7b9b46c9" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities_01a025e3-70a6-73fc-bd76-ffe69229b279" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities_01a025e3-70a6-73fc-bd76-ffe69229b279" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities_01a025e3-70a6-7e95-b0da-34643b064a7c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities_01a025e3-70a6-7e95-b0da-34643b064a7c" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_01a025e3-70a6-7b25-9444-0c6e5b11daeb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_01a025e3-70a6-7b25-9444-0c6e5b11daeb" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationAssetsNetOfLiabilities_01a025e3-70a6-711c-a176-1b4c2240a91b" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationAssetsNetOfLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationBalanceSheetDisclosuresAbstract_01a025e3-70a6-7ba4-b4f7-c5f03468a0f0" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationAssetsNetOfLiabilities_01a025e3-70a6-711c-a176-1b4c2240a91b" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_01a025e3-70a6-7c5b-9ae7-b392c8464ee6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-74a9-92bd-357f83910799" xlink:to="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_01a025e3-70a6-7c5b-9ae7-b392c8464ee6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_01a025e3-70a6-7256-abb2-da93c9eef141" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_01a025e3-70a6-7c5b-9ae7-b392c8464ee6" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_01a025e3-70a6-7256-abb2-da93c9eef141" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold_01a025e3-70a6-7446-9347-f6f73630bc50" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_01a025e3-70a6-7c5b-9ae7-b392c8464ee6" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold_01a025e3-70a6-7446-9347-f6f73630bc50" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss_01a025e3-70a6-7c75-8f47-7b6a4aa95632" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_01a025e3-70a6-7c5b-9ae7-b392c8464ee6" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss_01a025e3-70a6-7c75-8f47-7b6a4aa95632" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopment_01a025e3-70a6-705a-b787-5d3007822dc0" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_01a025e3-70a6-7c5b-9ae7-b392c8464ee6" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopment_01a025e3-70a6-705a-b787-5d3007822dc0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense_01a025e3-70a6-798c-b045-14dfdf43e013" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_01a025e3-70a6-7c5b-9ae7-b392c8464ee6" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense_01a025e3-70a6-798c-b045-14dfdf43e013" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationOtherOperatingIncomeExpense_01a025e3-70a6-7727-a16c-b84aba4858d9" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationOtherOperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_01a025e3-70a6-7c5b-9ae7-b392c8464ee6" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationOtherOperatingIncomeExpense_01a025e3-70a6-7727-a16c-b84aba4858d9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense_01a025e3-70a6-79fc-9b4b-7d2d23ff95df" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_01a025e3-70a6-7c5b-9ae7-b392c8464ee6" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense_01a025e3-70a6-79fc-9b4b-7d2d23ff95df" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss_01a025e3-70a6-7945-b46e-d6f67d6b3a38" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_01a025e3-70a6-7c5b-9ae7-b392c8464ee6" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss_01a025e3-70a6-7945-b46e-d6f67d6b3a38" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationAssetImpairmentCharge_01a025e3-70a6-7e99-b94c-f3f79b087b65" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationAssetImpairmentCharge"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_01a025e3-70a6-7c5b-9ae7-b392c8464ee6" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationAssetImpairmentCharge_01a025e3-70a6-7e99-b94c-f3f79b087b65" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestIncome_01a025e3-70a6-7238-8830-24a21213aedd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_01a025e3-70a6-7c5b-9ae7-b392c8464ee6" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestIncome_01a025e3-70a6-7238-8830-24a21213aedd" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherExpense_01a025e3-70a6-7a9b-bafe-3ea3700a7eb4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_01a025e3-70a6-7c5b-9ae7-b392c8464ee6" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherExpense_01a025e3-70a6-7a9b-bafe-3ea3700a7eb4" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationInterestIncomeExpense_01a025e3-70a6-7d56-a526-742aba86a8f4" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationInterestIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_01a025e3-70a6-7c5b-9ae7-b392c8464ee6" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationInterestIncomeExpense_01a025e3-70a6-7d56-a526-742aba86a8f4" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_01a025e3-70a6-75fb-a604-5f394d22efb5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_01a025e3-70a6-7c5b-9ae7-b392c8464ee6" xlink:to="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_01a025e3-70a6-75fb-a604-5f394d22efb5" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_01a025e3-70a6-7597-acb5-adebcddfd706" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_01a025e3-70a6-7c5b-9ae7-b392c8464ee6" xlink:to="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_01a025e3-70a6-7597-acb5-adebcddfd706" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_01a025e3-70a6-7602-b58d-6488cb803086" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresAbstract_01a025e3-70a6-7c5b-9ae7-b392c8464ee6" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_01a025e3-70a6-7602-b58d-6488cb803086" xlink:type="arc" order="15"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/DivestitureofSMARTBrazilLossFromDivestitureDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#DivestitureofSMARTBrazilLossFromDivestitureDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/DivestitureofSMARTBrazilLossFromDivestitureDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-7083-b8c3-4e8f8ca9c690" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-7df0-a706-336b2cb10405" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-7083-b8c3-4e8f8ca9c690" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-7df0-a706-336b2cb10405" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_01a025e3-70a6-79aa-b92f-fa6fae544144" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-7df0-a706-336b2cb10405" xlink:to="loc_srt_OwnershipAxis_01a025e3-70a6-79aa-b92f-fa6fae544144" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_01a025e3-70a6-79aa-b92f-fa6fae544144_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_01a025e3-70a6-79aa-b92f-fa6fae544144" xlink:to="loc_srt_OwnershipDomain_01a025e3-70a6-79aa-b92f-fa6fae544144_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_01a025e3-70a6-723c-8d6a-1af55f886e66" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_01a025e3-70a6-79aa-b92f-fa6fae544144" xlink:to="loc_srt_OwnershipDomain_01a025e3-70a6-723c-8d6a-1af55f886e66" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SMARTBrazilMember_01a025e3-70a6-74f8-ad59-e3c9dc4bed60" xlink:href="peng-20260828.xsd#peng_SMARTBrazilMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_01a025e3-70a6-723c-8d6a-1af55f886e66" xlink:to="loc_peng_SMARTBrazilMember_01a025e3-70a6-74f8-ad59-e3c9dc4bed60" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_01a025e3-70a6-74ad-95cf-f304e6fb7fff" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-7df0-a706-336b2cb10405" xlink:to="loc_srt_ConsolidatedEntitiesAxis_01a025e3-70a6-74ad-95cf-f304e6fb7fff" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_01a025e3-70a6-74ad-95cf-f304e6fb7fff_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_01a025e3-70a6-74ad-95cf-f304e6fb7fff" xlink:to="loc_srt_ConsolidatedEntitiesDomain_01a025e3-70a6-74ad-95cf-f304e6fb7fff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_01a025e3-70a6-7818-83bf-5c79f783ec20" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_01a025e3-70a6-74ad-95cf-f304e6fb7fff" xlink:to="loc_srt_ConsolidatedEntitiesDomain_01a025e3-70a6-7818-83bf-5c79f783ec20" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SMARTBrazilMember_01a025e3-70a6-7cee-84bd-aedf1a1bcc73" xlink:href="peng-20260828.xsd#peng_SMARTBrazilMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_01a025e3-70a6-7818-83bf-5c79f783ec20" xlink:to="loc_peng_SMARTBrazilMember_01a025e3-70a6-7cee-84bd-aedf1a1bcc73" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_01a025e3-70a6-77a3-ba95-84a0cd05777c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-7df0-a706-336b2cb10405" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_01a025e3-70a6-77a3-ba95-84a0cd05777c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_01a025e3-70a6-77a3-ba95-84a0cd05777c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_01a025e3-70a6-77a3-ba95-84a0cd05777c" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_01a025e3-70a6-77a3-ba95-84a0cd05777c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_01a025e3-70a6-7388-bbf1-a5d922a95602" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_01a025e3-70a6-77a3-ba95-84a0cd05777c" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_01a025e3-70a6-7388-bbf1-a5d922a95602" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationsDisposedOfBySaleMember_01a025e3-70a6-7b79-8258-a9c872dac84b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DiscontinuedOperationsDisposedOfBySaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_01a025e3-70a6-7388-bbf1-a5d922a95602" xlink:to="loc_us-gaap_DiscontinuedOperationsDisposedOfBySaleMember_01a025e3-70a6-7b79-8258-a9c872dac84b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a025e3-70a6-74cb-8f77-18983167aff1" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-7df0-a706-336b2cb10405" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a025e3-70a6-74cb-8f77-18983167aff1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_01a025e3-70a6-74cb-8f77-18983167aff1_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a025e3-70a6-74cb-8f77-18983167aff1" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_01a025e3-70a6-74cb-8f77-18983167aff1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_01a025e3-70a6-7f30-ab89-dd06020108cf" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a025e3-70a6-74cb-8f77-18983167aff1" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_01a025e3-70a6-7f30-ab89-dd06020108cf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SMARTBrazilMember_01a025e3-70a6-75ff-9cda-f6fa63422333" xlink:href="peng-20260828.xsd#peng_SMARTBrazilMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_01a025e3-70a6-7f30-ab89-dd06020108cf" xlink:to="loc_peng_SMARTBrazilMember_01a025e3-70a6-75ff-9cda-f6fa63422333" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_01a025e3-70a6-7a07-ad74-8e86850d19b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-7df0-a706-336b2cb10405" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_01a025e3-70a6-7a07-ad74-8e86850d19b2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_01a025e3-70a6-7a07-ad74-8e86850d19b2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_01a025e3-70a6-7a07-ad74-8e86850d19b2" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_01a025e3-70a6-7a07-ad74-8e86850d19b2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_01a025e3-70a6-7616-ad53-8229ff682dd4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_01a025e3-70a6-7a07-ad74-8e86850d19b2" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_01a025e3-70a6-7616-ad53-8229ff682dd4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SMARTBrazilMember_01a025e3-70a6-7dec-94ea-d1d89f7469eb" xlink:href="peng-20260828.xsd#peng_SMARTBrazilMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_01a025e3-70a6-7616-ad53-8229ff682dd4" xlink:to="loc_peng_SMARTBrazilMember_01a025e3-70a6-7dec-94ea-d1d89f7469eb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_01a025e3-70a6-750d-84d6-dc1919c76c7a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_01a025e3-70a6-7df0-a706-336b2cb10405" xlink:to="loc_dei_LegalEntityAxis_01a025e3-70a6-750d-84d6-dc1919c76c7a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a025e3-70a6-750d-84d6-dc1919c76c7a_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_01a025e3-70a6-750d-84d6-dc1919c76c7a" xlink:to="loc_dei_EntityDomain_01a025e3-70a6-750d-84d6-dc1919c76c7a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a025e3-70a6-7915-8f90-43baff825230" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_01a025e3-70a6-750d-84d6-dc1919c76c7a" xlink:to="loc_dei_EntityDomain_01a025e3-70a6-7915-8f90-43baff825230" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_LexarEuropeBVMember_01a025e3-70a6-7128-b9fd-907889c085b6" xlink:href="peng-20260828.xsd#peng_LexarEuropeBVMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_01a025e3-70a6-7915-8f90-43baff825230" xlink:to="loc_peng_LexarEuropeBVMember_01a025e3-70a6-7128-b9fd-907889c085b6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_01a025e3-70a6-74e7-999d-31815e622f09" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-7083-b8c3-4e8f8ca9c690" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_01a025e3-70a6-74e7-999d-31815e622f09" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationCostsToSellAndOtherExpenses_01a025e3-70a6-7605-ad76-b300ba2233b3" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationCostsToSellAndOtherExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-7083-b8c3-4e8f8ca9c690" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationCostsToSellAndOtherExpenses_01a025e3-70a6-7605-ad76-b300ba2233b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationConsiderationNetExpenses_01a025e3-70a6-7daf-8b3f-9d6c978f61a3" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationConsiderationNetExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-7083-b8c3-4e8f8ca9c690" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationConsiderationNetExpenses_01a025e3-70a6-7daf-8b3f-9d6c978f61a3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationNetAssetsBeforeCumulativeTranslationAdjustment_01a025e3-70a6-7e10-84ef-016b49d11855" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationNetAssetsBeforeCumulativeTranslationAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-7083-b8c3-4e8f8ca9c690" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationNetAssetsBeforeCumulativeTranslationAdjustment_01a025e3-70a6-7e10-84ef-016b49d11855" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationCumulativeTranslationAdjustment_01a025e3-70a6-7f20-9000-8ee89941b80d" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationCumulativeTranslationAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-7083-b8c3-4e8f8ca9c690" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationCumulativeTranslationAdjustment_01a025e3-70a6-7f20-9000-8ee89941b80d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DisposalGroupIncludingDiscontinuedOperationAssetsNetOfCumulativeTranslationAdjustment_01a025e3-70a6-7796-8e7d-c2beeb49aaf6" xlink:href="peng-20260828.xsd#peng_DisposalGroupIncludingDiscontinuedOperationAssetsNetOfCumulativeTranslationAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-7083-b8c3-4e8f8ca9c690" xlink:to="loc_peng_DisposalGroupIncludingDiscontinuedOperationAssetsNetOfCumulativeTranslationAdjustment_01a025e3-70a6-7796-8e7d-c2beeb49aaf6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeconsolidationRevaluationOfRetainedInvestmentGainOrLossAmount_01a025e3-70a6-71f0-8383-3cf9d169dca1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeconsolidationRevaluationOfRetainedInvestmentGainOrLossAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-7083-b8c3-4e8f8ca9c690" xlink:to="loc_us-gaap_DeconsolidationRevaluationOfRetainedInvestmentGainOrLossAmount_01a025e3-70a6-71f0-8383-3cf9d169dca1" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax_01a025e3-70a6-7020-b9be-94cbad3aba46" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-7083-b8c3-4e8f8ca9c690" xlink:to="loc_us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax_01a025e3-70a6-7020-b9be-94cbad3aba46" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationTaxEffectOfIncomeLossFromDisposalOfDiscontinuedOperation_01a025e3-70a6-7cd9-8cf4-1ed45a08fc74" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DiscontinuedOperationTaxEffectOfIncomeLossFromDisposalOfDiscontinuedOperation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-7083-b8c3-4e8f8ca9c690" xlink:to="loc_us-gaap_DiscontinuedOperationTaxEffectOfIncomeLossFromDisposalOfDiscontinuedOperation_01a025e3-70a6-7cd9-8cf4-1ed45a08fc74" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax_01a025e3-70a6-7dc5-b576-6f2648c351c8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-7083-b8c3-4e8f8ca9c690" xlink:to="loc_us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax_01a025e3-70a6-7dc5-b576-6f2648c351c8" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationGainLossOnDisposalStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_01a025e3-70a6-7e78-8c4b-d5b6f697ee9f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DiscontinuedOperationGainLossOnDisposalStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax_01a025e3-70a6-7dc5-b576-6f2648c351c8" xlink:to="loc_us-gaap_DiscontinuedOperationGainLossOnDisposalStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_01a025e3-70a6-7e78-8c4b-d5b6f697ee9f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_StockRepurchaseAgreementOwnershipRightsPercent_01a025e3-70a6-7119-aa74-f6aa9c49d2fc" xlink:href="peng-20260828.xsd#peng_StockRepurchaseAgreementOwnershipRightsPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-7083-b8c3-4e8f8ca9c690" xlink:to="loc_peng_StockRepurchaseAgreementOwnershipRightsPercent_01a025e3-70a6-7119-aa74-f6aa9c49d2fc" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TotalEnterpriseValuePercentage_01a025e3-70a6-7f2f-91aa-32685cdefc1b" xlink:href="peng-20260828.xsd#peng_TotalEnterpriseValuePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_01a025e3-70a6-7083-b8c3-4e8f8ca9c690" xlink:to="loc_peng_TotalEnterpriseValuePercentage_01a025e3-70a6-7f2f-91aa-32685cdefc1b" xlink:type="arc" order="11"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/CashandInvestmentsScheduleofCashCashEquivalentsandShorttermInvestmentsDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#CashandInvestmentsScheduleofCashCashEquivalentsandShorttermInvestmentsDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/CashandInvestmentsScheduleofCashCashEquivalentsandShorttermInvestmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsLineItems_01a025e3-70a6-7f3b-931b-8a0833210b20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_01a025e3-70a6-79db-b965-52f0f3879287" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfCashAndCashEquivalentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a025e3-70a6-7f3b-931b-8a0833210b20" xlink:to="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_01a025e3-70a6-79db-b965-52f0f3879287" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAxis_01a025e3-70a6-7168-ae59-2e14d50ee8b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_01a025e3-70a6-79db-b965-52f0f3879287" xlink:to="loc_us-gaap_CashAndCashEquivalentsAxis_01a025e3-70a6-7168-ae59-2e14d50ee8b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_01a025e3-70a6-7168-ae59-2e14d50ee8b6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_01a025e3-70a6-7168-ae59-2e14d50ee8b6" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_01a025e3-70a6-7168-ae59-2e14d50ee8b6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_01a025e3-70a6-7660-9cd5-d3f002317ea8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_01a025e3-70a6-7168-ae59-2e14d50ee8b6" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_01a025e3-70a6-7660-9cd5-d3f002317ea8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashMember_01a025e3-70a6-7994-a206-9b5312d2c2cc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_01a025e3-70a6-7660-9cd5-d3f002317ea8" xlink:to="loc_us-gaap_CashMember_01a025e3-70a6-7994-a206-9b5312d2c2cc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a025e3-70a6-71d8-8227-cd8221475197" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_01a025e3-70a6-79db-b965-52f0f3879287" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a025e3-70a6-71d8-8227-cd8221475197" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a025e3-70a6-71d8-8227-cd8221475197_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a025e3-70a6-71d8-8227-cd8221475197" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a025e3-70a6-71d8-8227-cd8221475197_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a025e3-70a6-709c-8a46-c8378a38ad92" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a025e3-70a6-71d8-8227-cd8221475197" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a025e3-70a6-709c-8a46-c8378a38ad92" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_01a025e3-70a6-765c-9f27-cc92161bd9a2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MoneyMarketFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a025e3-70a6-709c-8a46-c8378a38ad92" xlink:to="loc_us-gaap_MoneyMarketFundsMember_01a025e3-70a6-765c-9f27-cc92161bd9a2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a025e3-70a6-7f76-a4fb-9b35695016ab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a025e3-70a6-7f3b-931b-8a0833210b20" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a025e3-70a6-7f76-a4fb-9b35695016ab" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCash_01a0478a-825c-7c2e-a9aa-591a59f92bad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a025e3-70a6-7f3b-931b-8a0833210b20" xlink:to="loc_us-gaap_RestrictedCash_01a0478a-825c-7c2e-a9aa-591a59f92bad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_01a0478a-2297-7d45-9340-21eb51c5a6b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a025e3-70a6-7f3b-931b-8a0833210b20" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_01a0478a-2297-7d45-9340-21eb51c5a6b1" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/CashandInvestmentsNarrativeDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#CashandInvestmentsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/CashandInvestmentsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_01a047b6-9c26-7e03-9f22-0801451e885a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfCashAndCashEquivalentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:to="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_01a047b6-9c26-7e03-9f22-0801451e885a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a047b6-9c26-7655-83b1-14e580db7364" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_01a047b6-9c26-7e03-9f22-0801451e885a" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a047b6-9c26-7655-83b1-14e580db7364" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a047b6-9c26-7655-83b1-14e580db7364_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a047b6-9c26-7655-83b1-14e580db7364" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a047b6-9c26-7655-83b1-14e580db7364_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a047b6-9c26-7fce-af92-48d004ad650e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a047b6-9c26-7655-83b1-14e580db7364" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a047b6-9c26-7fce-af92-48d004ad650e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_CelestialAIPreferredSharesMember_01a047b6-9c26-7375-b4f9-e4581943c4ce" xlink:href="peng-20260828.xsd#peng_CelestialAIPreferredSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a047b6-9c26-7fce-af92-48d004ad650e" xlink:to="loc_peng_CelestialAIPreferredSharesMember_01a047b6-9c26-7375-b4f9-e4581943c4ce" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_ZiliaTechnologiesMember_01a047b6-ef4d-74fb-b7b7-fc39ea43027d" xlink:href="peng-20260828.xsd#peng_ZiliaTechnologiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a047b6-9c26-7fce-af92-48d004ad650e" xlink:to="loc_peng_ZiliaTechnologiesMember_01a047b6-ef4d-74fb-b7b7-fc39ea43027d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_OneNonMarketableEquityInvestmentMember_01a047b6-ef4d-716b-9739-c8d35cb54e53" xlink:href="peng-20260828.xsd#peng_OneNonMarketableEquityInvestmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a047b6-9c26-7fce-af92-48d004ad650e" xlink:to="loc_peng_OneNonMarketableEquityInvestmentMember_01a047b6-ef4d-716b-9739-c8d35cb54e53" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransactionTypeAxis_01a047b6-9c26-7cf3-b436-f37bfca0076d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransactionTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_01a047b6-9c26-7e03-9f22-0801451e885a" xlink:to="loc_us-gaap_TransactionTypeAxis_01a047b6-9c26-7cf3-b436-f37bfca0076d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransactionDomain_01a047b6-9c26-7cf3-b436-f37bfca0076d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TransactionTypeAxis_01a047b6-9c26-7cf3-b436-f37bfca0076d" xlink:to="loc_us-gaap_TransactionDomain_01a047b6-9c26-7cf3-b436-f37bfca0076d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransactionDomain_01a047b6-9c26-71cf-844d-deec78c85227" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TransactionTypeAxis_01a047b6-9c26-7cf3-b436-f37bfca0076d" xlink:to="loc_us-gaap_TransactionDomain_01a047b6-9c26-71cf-844d-deec78c85227" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_CelestialAIMergerMember_01a047b6-9c26-7b55-af35-0c15bce582ae" xlink:href="peng-20260828.xsd#peng_CelestialAIMergerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransactionDomain_01a047b6-9c26-71cf-844d-deec78c85227" xlink:to="loc_peng_CelestialAIMergerMember_01a047b6-9c26-7b55-af35-0c15bce582ae" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_01a047b6-ef4d-752b-b8c7-45ee6de5dffc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_01a047b6-9c26-7e03-9f22-0801451e885a" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_01a047b6-ef4d-752b-b8c7-45ee6de5dffc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_01a047b6-ef4d-752b-b8c7-45ee6de5dffc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_01a047b6-ef4d-752b-b8c7-45ee6de5dffc" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_01a047b6-ef4d-752b-b8c7-45ee6de5dffc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_01a047b6-ef4d-7c29-a0f8-1edc2a319499" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_01a047b6-ef4d-752b-b8c7-45ee6de5dffc" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_01a047b6-ef4d-7c29-a0f8-1edc2a319499" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_01a047b6-ef4d-7901-87e2-9ea1db98a586" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_01a047b6-ef4d-7c29-a0f8-1edc2a319499" xlink:to="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_01a047b6-ef4d-7901-87e2-9ea1db98a586" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_01a047b6-ef4d-797e-985f-dc8f535fcbf0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_01a047b6-9c26-7e03-9f22-0801451e885a" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_01a047b6-ef4d-797e-985f-dc8f535fcbf0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_01a047b6-ef4d-797e-985f-dc8f535fcbf0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_01a047b6-ef4d-797e-985f-dc8f535fcbf0" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_01a047b6-ef4d-797e-985f-dc8f535fcbf0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_01a047b6-ef4d-70d1-80f8-c22efca6bfaf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_01a047b6-ef4d-797e-985f-dc8f535fcbf0" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_01a047b6-ef4d-70d1-80f8-c22efca6bfaf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_ZiliaTechnologiesMember_01a047b6-ef4d-7c0e-abcb-44d73ce77e70" xlink:href="peng-20260828.xsd#peng_ZiliaTechnologiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_01a047b6-ef4d-70d1-80f8-c22efca6bfaf" xlink:to="loc_peng_ZiliaTechnologiesMember_01a047b6-ef4d-7c0e-abcb-44d73ce77e70" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_01a047b6-ef4d-70a3-8f68-20459ba8dd95" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_01a047b6-9c26-7e03-9f22-0801451e885a" xlink:to="loc_srt_OwnershipAxis_01a047b6-ef4d-70a3-8f68-20459ba8dd95" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_01a047b6-ef4d-70a3-8f68-20459ba8dd95_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_01a047b6-ef4d-70a3-8f68-20459ba8dd95" xlink:to="loc_srt_OwnershipDomain_01a047b6-ef4d-70a3-8f68-20459ba8dd95_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_01a047b6-ef4d-7323-b052-72281d28966e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_01a047b6-ef4d-70a3-8f68-20459ba8dd95" xlink:to="loc_srt_OwnershipDomain_01a047b6-ef4d-7323-b052-72281d28966e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SMARTBrazilMember_01a047b6-ef4d-78eb-bb9e-40716695c383" xlink:href="peng-20260828.xsd#peng_SMARTBrazilMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_01a047b6-ef4d-7323-b052-72281d28966e" xlink:to="loc_peng_SMARTBrazilMember_01a047b6-ef4d-78eb-bb9e-40716695c383" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_01a047b6-ef4d-7503-bd11-36e0caa5d3c7" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_01a047b6-9c26-7e03-9f22-0801451e885a" xlink:to="loc_dei_LegalEntityAxis_01a047b6-ef4d-7503-bd11-36e0caa5d3c7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a047b6-ef4d-7503-bd11-36e0caa5d3c7_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_01a047b6-ef4d-7503-bd11-36e0caa5d3c7" xlink:to="loc_dei_EntityDomain_01a047b6-ef4d-7503-bd11-36e0caa5d3c7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a047b6-ef4d-7a9d-ac47-59cfcc06adb6" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_01a047b6-ef4d-7503-bd11-36e0caa5d3c7" xlink:to="loc_dei_EntityDomain_01a047b6-ef4d-7a9d-ac47-59cfcc06adb6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_LexarEuropeBVMember_01a047b6-ef4d-74c7-91f2-d62519a1aeef" xlink:href="peng-20260828.xsd#peng_LexarEuropeBVMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_01a047b6-ef4d-7a9d-ac47-59cfcc06adb6" xlink:to="loc_peng_LexarEuropeBVMember_01a047b6-ef4d-74c7-91f2-d62519a1aeef" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFVNINoncurrent_01a047b6-9c26-74e1-bdd7-607cb18ed61c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquitySecuritiesFVNINoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:to="loc_us-gaap_EquitySecuritiesFVNINoncurrent_01a047b6-9c26-74e1-bdd7-607cb18ed61c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_MergerTransactionConsiderationReceived_01a047b6-9c26-7611-b063-e241c64312ae" xlink:href="peng-20260828.xsd#peng_MergerTransactionConsiderationReceived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:to="loc_peng_MergerTransactionConsiderationReceived_01a047b6-9c26-7611-b063-e241c64312ae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_MergerTransactionConsiderationTransferredEquityInterestShareIssuedNumberOfShares_01a047b6-9c26-776b-83c0-570acd7bf668" xlink:href="peng-20260828.xsd#peng_MergerTransactionConsiderationTransferredEquityInterestShareIssuedNumberOfShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:to="loc_peng_MergerTransactionConsiderationTransferredEquityInterestShareIssuedNumberOfShares_01a047b6-9c26-776b-83c0-570acd7bf668" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_MergerTransactionConsiderationTransferredEquityInterestFairValue_01a047b6-9c26-72a0-87b0-25b859e99a2d" xlink:href="peng-20260828.xsd#peng_MergerTransactionConsiderationTransferredEquityInterestFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:to="loc_peng_MergerTransactionConsiderationTransferredEquityInterestFairValue_01a047b6-9c26-72a0-87b0-25b859e99a2d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_MergerTransactionGainLossOnConsiderationReceived_01a047b6-9c26-7501-a0a5-dc6e36173865" xlink:href="peng-20260828.xsd#peng_MergerTransactionGainLossOnConsiderationReceived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:to="loc_peng_MergerTransactionGainLossOnConsiderationReceived_01a047b6-9c26-7501-a0a5-dc6e36173865" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SaleOfEquityInterestMergerShares_01a047b6-ef4d-7440-b55d-ae0840808cbb" xlink:href="peng-20260828.xsd#peng_SaleOfEquityInterestMergerShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:to="loc_peng_SaleOfEquityInterestMergerShares_01a047b6-ef4d-7440-b55d-ae0840808cbb" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_ProceedsFromSaleOfMergerEquityInterest_01a047b6-ef4d-7925-bfa2-70503d8a5003" xlink:href="peng-20260828.xsd#peng_ProceedsFromSaleOfMergerEquityInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:to="loc_peng_ProceedsFromSaleOfMergerEquityInterest_01a047b6-ef4d-7925-bfa2-70503d8a5003" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_GainLossOnSaleOfMergerEquityInterest_01a047b6-ef4d-7c83-975a-9f844926db03" xlink:href="peng-20260828.xsd#peng_GainLossOnSaleOfMergerEquityInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:to="loc_peng_GainLossOnSaleOfMergerEquityInterest_01a047b6-ef4d-7c83-975a-9f844926db03" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_MergerTransactionContingentConsiderationRevenueMilestoneTargetAmount_01a047b6-ef4d-7ec5-95fc-621fd077939d" xlink:href="peng-20260828.xsd#peng_MergerTransactionContingentConsiderationRevenueMilestoneTargetAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:to="loc_peng_MergerTransactionContingentConsiderationRevenueMilestoneTargetAmount_01a047b6-ef4d-7ec5-95fc-621fd077939d" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_MergerTransactionContingentConsiderationRevenueMilestoneTargetFullEarnoutAmount_01a047b6-ef4d-7619-b7c1-112016e45f19" xlink:href="peng-20260828.xsd#peng_MergerTransactionContingentConsiderationRevenueMilestoneTargetFullEarnoutAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:to="loc_peng_MergerTransactionContingentConsiderationRevenueMilestoneTargetFullEarnoutAmount_01a047b6-ef4d-7619-b7c1-112016e45f19" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_01a047b6-ef4d-744f-978d-f876b510e60d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_01a047b6-ef4d-744f-978d-f876b510e60d" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AlternativeInvestment_01a047b6-ef4d-74dd-840f-e3c64107409d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AlternativeInvestment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:to="loc_us-gaap_AlternativeInvestment_01a047b6-ef4d-74dd-840f-e3c64107409d" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_StockRepurchaseAgreementOwnershipRightsPercent_01a047b6-ef4d-7314-ad43-57ef079632a7" xlink:href="peng-20260828.xsd#peng_StockRepurchaseAgreementOwnershipRightsPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:to="loc_peng_StockRepurchaseAgreementOwnershipRightsPercent_01a047b6-ef4d-7314-ad43-57ef079632a7" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfEquityMethodInvestments_01a047b6-ef4d-755c-af8a-f7cf0abd6902" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromSaleOfEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:to="loc_us-gaap_ProceedsFromSaleOfEquityMethodInvestments_01a047b6-ef4d-755c-af8a-f7cf0abd6902" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_IncomeTaxWithholdingOnEquityMethodInvestments_01a047b6-ef4d-7f50-87b0-322316936690" xlink:href="peng-20260828.xsd#peng_IncomeTaxWithholdingOnEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:to="loc_peng_IncomeTaxWithholdingOnEquityMethodInvestments_01a047b6-ef4d-7f50-87b0-322316936690" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_01a047b6-ef4d-7c48-b66c-9a96b62cdf63" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:to="loc_us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_01a047b6-ef4d-7c48-b66c-9a96b62cdf63" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_GainLossOnImpairmentOfNonMarketableEquityInvestment_01a047b7-1100-7786-8b27-4f5e0889a28a" xlink:href="peng-20260828.xsd#peng_GainLossOnImpairmentOfNonMarketableEquityInvestment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a047b6-9c26-734f-ada7-f1cf7b6848f3" xlink:to="loc_peng_GainLossOnImpairmentOfNonMarketableEquityInvestment_01a047b7-1100-7786-8b27-4f5e0889a28a" xlink:type="arc" order="16"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/PropertyandEquipmentScheduleofPropertyandEquipmentDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#PropertyandEquipmentScheduleofPropertyandEquipmentDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/PropertyandEquipmentScheduleofPropertyandEquipmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a025e3-70a7-7443-a3f2-ef1cfc2ab876" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a025e3-70a7-73e9-acd3-ad2ac57681f1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a025e3-70a7-7443-a3f2-ef1cfc2ab876" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a025e3-70a7-73e9-acd3-ad2ac57681f1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a025e3-70a7-78a9-a432-596e0ac828ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a025e3-70a7-73e9-acd3-ad2ac57681f1" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a025e3-70a7-78a9-a432-596e0ac828ae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a025e3-70a7-78a9-a432-596e0ac828ae_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a025e3-70a7-78a9-a432-596e0ac828ae" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a025e3-70a7-78a9-a432-596e0ac828ae_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a025e3-70a7-794a-90a8-e343da63ee2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a025e3-70a7-78a9-a432-596e0ac828ae" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a025e3-70a7-794a-90a8-e343da63ee2e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquipmentMember_01a025e3-70a7-7618-b3ef-e5b09e94a1b0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a025e3-70a7-794a-90a8-e343da63ee2e" xlink:to="loc_us-gaap_EquipmentMember_01a025e3-70a7-7618-b3ef-e5b09e94a1b0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_01a025e3-70a7-7eec-a676-ef6119166676" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BuildingAndBuildingImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a025e3-70a7-794a-90a8-e343da63ee2e" xlink:to="loc_us-gaap_BuildingAndBuildingImprovementsMember_01a025e3-70a7-7eec-a676-ef6119166676" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_FurnitureFixturesAndSoftwareMember_01a025e3-70a7-78a5-9206-42db26a895e6" xlink:href="peng-20260828.xsd#peng_FurnitureFixturesAndSoftwareMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a025e3-70a7-794a-90a8-e343da63ee2e" xlink:to="loc_peng_FurnitureFixturesAndSoftwareMember_01a025e3-70a7-78a5-9206-42db26a895e6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandMember_01a025e3-70a7-7563-b3f0-fa88a1278112" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LandMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a025e3-70a7-794a-90a8-e343da63ee2e" xlink:to="loc_us-gaap_LandMember_01a025e3-70a7-7563-b3f0-fa88a1278112" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_01a025e3-70a7-77e7-b5cd-e1987a03c8b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a025e3-70a7-7443-a3f2-ef1cfc2ab876" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_01a025e3-70a7-77e7-b5cd-e1987a03c8b3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_01a025e3-70a7-7760-a5b4-4f6a76857bb0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a025e3-70a7-7443-a3f2-ef1cfc2ab876" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_01a025e3-70a7-7760-a5b4-4f6a76857bb0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_01a025e3-70a7-71ec-9efe-1e4f2adfe80e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a025e3-70a7-7443-a3f2-ef1cfc2ab876" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_01a025e3-70a7-71ec-9efe-1e4f2adfe80e" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/IntangibleAssetsandGoodwillScheduleofIntangibleAssetsandGoodwillbySegmentDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#IntangibleAssetsandGoodwillScheduleofIntangibleAssetsandGoodwillbySegmentDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/IntangibleAssetsandGoodwillScheduleofIntangibleAssetsandGoodwillbySegmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-71b6-ac65-aaf9d2a73202" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_01a025e3-70a7-74fa-a090-4af110d3e75e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-71b6-ac65-aaf9d2a73202" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_01a025e3-70a7-74fa-a090-4af110d3e75e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a025e3-70a7-7bb9-806d-552018dd5f37" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_01a025e3-70a7-74fa-a090-4af110d3e75e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a025e3-70a7-7bb9-806d-552018dd5f37" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a025e3-70a7-7bb9-806d-552018dd5f37_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a025e3-70a7-7bb9-806d-552018dd5f37" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a025e3-70a7-7bb9-806d-552018dd5f37_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a025e3-70a7-75d9-867c-e86b05e6d443" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a025e3-70a7-7bb9-806d-552018dd5f37" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a025e3-70a7-75d9-867c-e86b05e6d443" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TechnologyBasedIntangibleAssetsMember_01a025e3-70a7-7e65-90ee-b04372b08846" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TechnologyBasedIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a025e3-70a7-75d9-867c-e86b05e6d443" xlink:to="loc_us-gaap_TechnologyBasedIntangibleAssetsMember_01a025e3-70a7-7e65-90ee-b04372b08846" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_01a025e3-70a7-7bd3-a0d7-d4eb72702ee7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a025e3-70a7-75d9-867c-e86b05e6d443" xlink:to="loc_us-gaap_CustomerRelationshipsMember_01a025e3-70a7-7bd3-a0d7-d4eb72702ee7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TrademarksAndTradeNamesMember_01a025e3-70a7-7ca9-be1f-539c1bca765a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TrademarksAndTradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a025e3-70a7-75d9-867c-e86b05e6d443" xlink:to="loc_us-gaap_TrademarksAndTradeNamesMember_01a025e3-70a7-7ca9-be1f-539c1bca765a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_01a025e3-70a7-79d6-82e6-3fe6b489cacf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-71b6-ac65-aaf9d2a73202" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_01a025e3-70a7-79d6-82e6-3fe6b489cacf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_01a025e3-70a7-7a9e-8be0-e4b038fc9b26" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-71b6-ac65-aaf9d2a73202" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_01a025e3-70a7-7a9e-8be0-e4b038fc9b26" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/IntangibleAssetsandGoodwillAdditionalInformationDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#IntangibleAssetsandGoodwillAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/IntangibleAssetsandGoodwillAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7049-bb6d-cabbad199db7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_01a025e3-70a7-7f1e-bc38-08e0b79fc0e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7049-bb6d-cabbad199db7" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_01a025e3-70a7-7f1e-bc38-08e0b79fc0e9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_01a025e3-70a7-7266-b829-09c5f60968ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_01a025e3-70a7-7f1e-bc38-08e0b79fc0e9" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_01a025e3-70a7-7266-b829-09c5f60968ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a025e3-70a7-7266-b829-09c5f60968ed_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a025e3-70a7-7266-b829-09c5f60968ed" xlink:to="loc_us-gaap_SegmentDomain_01a025e3-70a7-7266-b829-09c5f60968ed_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a025e3-70a7-7328-8b01-210f6e41d548" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a025e3-70a7-7266-b829-09c5f60968ed" xlink:to="loc_us-gaap_SegmentDomain_01a025e3-70a7-7328-8b01-210f6e41d548" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_IntegratedMemoryMember_01a025e3-70a7-7642-8a13-621dfcc97270" xlink:href="peng-20260828.xsd#peng_IntegratedMemoryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a025e3-70a7-7328-8b01-210f6e41d548" xlink:to="loc_peng_IntegratedMemoryMember_01a025e3-70a7-7642-8a13-621dfcc97270" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_01a025e3-70a7-76c8-bc07-55d72d5ed48c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_01a025e3-70a7-7f1e-bc38-08e0b79fc0e9" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_01a025e3-70a7-76c8-bc07-55d72d5ed48c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-70a7-76c8-bc07-55d72d5ed48c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a025e3-70a7-76c8-bc07-55d72d5ed48c" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-70a7-76c8-bc07-55d72d5ed48c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-70a7-7916-ae1b-21d5555d6611" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a025e3-70a7-76c8-bc07-55d72d5ed48c" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-70a7-7916-ae1b-21d5555d6611" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_StratusTechnologiesMember_01a025e3-70a7-7918-b455-1cce09306e0e" xlink:href="peng-20260828.xsd#peng_StratusTechnologiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-70a7-7916-ae1b-21d5555d6611" xlink:to="loc_peng_StratusTechnologiesMember_01a025e3-70a7-7918-b455-1cce09306e0e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueAxis_01a025e3-70a7-7c38-a7b7-dec94a36821c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValuationTechniqueAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_01a025e3-70a7-7f1e-bc38-08e0b79fc0e9" xlink:to="loc_us-gaap_ValuationTechniqueAxis_01a025e3-70a7-7c38-a7b7-dec94a36821c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDomain_01a025e3-70a7-7c38-a7b7-dec94a36821c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValuationTechniqueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ValuationTechniqueAxis_01a025e3-70a7-7c38-a7b7-dec94a36821c" xlink:to="loc_us-gaap_ValuationTechniqueDomain_01a025e3-70a7-7c38-a7b7-dec94a36821c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDomain_01a025e3-70a7-7018-b96b-0d253c0576aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValuationTechniqueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ValuationTechniqueAxis_01a025e3-70a7-7c38-a7b7-dec94a36821c" xlink:to="loc_us-gaap_ValuationTechniqueDomain_01a025e3-70a7-7018-b96b-0d253c0576aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDiscountedCashFlowMember_01a025e3-70a7-71ed-8c8c-b522f2b388aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValuationTechniqueDiscountedCashFlowMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationTechniqueDomain_01a025e3-70a7-7018-b96b-0d253c0576aa" xlink:to="loc_us-gaap_ValuationTechniqueDiscountedCashFlowMember_01a025e3-70a7-71ed-8c8c-b522f2b388aa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_01a025e3-70a7-7a02-994a-ff36842fd2b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7049-bb6d-cabbad199db7" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_01a025e3-70a7-7a02-994a-ff36842fd2b3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_01a025e3-70a7-7454-bd90-39e606f93f04" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7049-bb6d-cabbad199db7" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_01a025e3-70a7-7454-bd90-39e606f93f04" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_01a025e3-70a7-71ac-a039-4d506fe9b673" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7049-bb6d-cabbad199db7" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_01a025e3-70a7-71ac-a039-4d506fe9b673" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_01a025e3-70a7-701e-8485-89f3bc269e1d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7049-bb6d-cabbad199db7" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_01a025e3-70a7-701e-8485-89f3bc269e1d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_01a025e3-70a7-74ef-991e-aaed01acf1c8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7049-bb6d-cabbad199db7" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_01a025e3-70a7-74ef-991e-aaed01acf1c8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_01a025e3-70a7-79f3-9d42-72323868c038" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7049-bb6d-cabbad199db7" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_01a025e3-70a7-79f3-9d42-72323868c038" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_01a025e3-70a7-78f2-b3a5-eaefa4b303fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7049-bb6d-cabbad199db7" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_01a025e3-70a7-78f2-b3a5-eaefa4b303fa" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_01a025e3-70a7-7ac5-9ba9-7319ef24a000" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7049-bb6d-cabbad199db7" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_01a025e3-70a7-7ac5-9ba9-7319ef24a000" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_01a025e3-70a7-7713-b77f-fc858f0a747c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7049-bb6d-cabbad199db7" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_01a025e3-70a7-7713-b77f-fc858f0a747c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_GoodwillMeasurementInput_01a025e3-70a7-7b28-9c82-6d45888d19dc" xlink:href="peng-20260828.xsd#peng_GoodwillMeasurementInput"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7049-bb6d-cabbad199db7" xlink:to="loc_peng_GoodwillMeasurementInput_01a025e3-70a7-7b28-9c82-6d45888d19dc" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_01a025e3-70a7-7d9d-9791-142b50b590e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7049-bb6d-cabbad199db7" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_01a025e3-70a7-7d9d-9791-142b50b590e1" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/IntangibleAssetsandGoodwillScheduleofGoodwillDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#IntangibleAssetsandGoodwillScheduleofGoodwillDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/IntangibleAssetsandGoodwillScheduleofGoodwillDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7b2f-bd4a-846b9d144949" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_01a025e3-70a7-7ec6-abef-36c966f7843f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7b2f-bd4a-846b9d144949" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_01a025e3-70a7-7ec6-abef-36c966f7843f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_01a025e3-70a7-7e7e-a764-4cbff84abb45" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_01a025e3-70a7-7ec6-abef-36c966f7843f" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_01a025e3-70a7-7e7e-a764-4cbff84abb45" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a025e3-70a7-7e7e-a764-4cbff84abb45_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a025e3-70a7-7e7e-a764-4cbff84abb45" xlink:to="loc_us-gaap_SegmentDomain_01a025e3-70a7-7e7e-a764-4cbff84abb45_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a025e3-70a7-7480-b04b-a1b6db702423" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a025e3-70a7-7e7e-a764-4cbff84abb45" xlink:to="loc_us-gaap_SegmentDomain_01a025e3-70a7-7480-b04b-a1b6db702423" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_AdvancedComputingMember_01a025e3-70a7-7874-bd7d-514c8e7551ec" xlink:href="peng-20260828.xsd#peng_AdvancedComputingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a025e3-70a7-7480-b04b-a1b6db702423" xlink:to="loc_peng_AdvancedComputingMember_01a025e3-70a7-7874-bd7d-514c8e7551ec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_IntegratedMemoryMember_01a025e3-70a7-74e8-bb36-0b39aa437c0e" xlink:href="peng-20260828.xsd#peng_IntegratedMemoryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a025e3-70a7-7480-b04b-a1b6db702423" xlink:to="loc_peng_IntegratedMemoryMember_01a025e3-70a7-74e8-bb36-0b39aa437c0e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillGross_01a025e3-70a7-7634-bc20-3b1943892a1e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7b2f-bd4a-846b9d144949" xlink:to="loc_us-gaap_GoodwillGross_01a025e3-70a7-7634-bc20-3b1943892a1e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_01a025e3-70a7-707b-b5c0-98cae93f45dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7b2f-bd4a-846b9d144949" xlink:to="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_01a025e3-70a7-707b-b5c0-98cae93f45dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_01a025e3-70a7-74cb-9c94-32fb58ab5211" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7b2f-bd4a-846b9d144949" xlink:to="loc_us-gaap_Goodwill_01a025e3-70a7-74cb-9c94-32fb58ab5211" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_01a025e3-70a7-78cb-b5c8-c61829f8098d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a025e3-70a7-7b2f-bd4a-846b9d144949" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_01a025e3-70a7-78cb-b5c8-c61829f8098d" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/DebtSummaryofLongTermDebtDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#DebtSummaryofLongTermDebtDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/DebtSummaryofLongTermDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7f3d-a7a7-4af13ea76957" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-73ff-a4f2-63aad5215067" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7f3d-a7a7-4af13ea76957" xlink:to="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-73ff-a4f2-63aad5215067" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-7464-a4ef-efff471a5054" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-73ff-a4f2-63aad5215067" xlink:to="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-7464-a4ef-efff471a5054" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-7464-a4ef-efff471a5054_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-7464-a4ef-efff471a5054" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-7464-a4ef-efff471a5054_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-7d80-b037-5798df226ac3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-7464-a4ef-efff471a5054" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-7d80-b037-5798df226ac3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SeniorNotesDueTwoThousandThirtyOneMember_01a025e3-7157-709e-b262-670788112660" xlink:href="peng-20260828.xsd#peng_SeniorNotesDueTwoThousandThirtyOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-7d80-b037-5798df226ac3" xlink:to="loc_peng_SeniorNotesDueTwoThousandThirtyOneMember_01a025e3-7157-709e-b262-670788112660" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SeniorNotesDueTwoThousandThirtyMember_01a025e3-7157-7c0e-8dc2-04b1d192e4cc" xlink:href="peng-20260828.xsd#peng_SeniorNotesDueTwoThousandThirtyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-7d80-b037-5798df226ac3" xlink:to="loc_peng_SeniorNotesDueTwoThousandThirtyMember_01a025e3-7157-7c0e-8dc2-04b1d192e4cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TwoPercentConvertibleSeniorNotesDueTwoThousandTwentyNineMember_01a025e3-7157-70a2-886f-2ea45f154f28" xlink:href="peng-20260828.xsd#peng_TwoPercentConvertibleSeniorNotesDueTwoThousandTwentyNineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-7d80-b037-5798df226ac3" xlink:to="loc_peng_TwoPercentConvertibleSeniorNotesDueTwoThousandTwentyNineMember_01a025e3-7157-70a2-886f-2ea45f154f28" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandTwentySixMember_01a025e3-7157-793e-8d99-bd52f7bf2da8" xlink:href="peng-20260828.xsd#peng_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandTwentySixMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-7d80-b037-5798df226ac3" xlink:to="loc_peng_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandTwentySixMember_01a025e3-7157-793e-8d99-bd52f7bf2da8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SeniorNotesDueTwoThousandTwentyFiveMember_01a025e3-7157-7637-b76c-a0fa148c0b4c" xlink:href="peng-20260828.xsd#peng_SeniorNotesDueTwoThousandTwentyFiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-7d80-b037-5798df226ac3" xlink:to="loc_peng_SeniorNotesDueTwoThousandTwentyFiveMember_01a025e3-7157-7637-b76c-a0fa148c0b4c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_01a025e3-7157-7ebe-9937-fc1715e6e9f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7f3d-a7a7-4af13ea76957" xlink:to="loc_us-gaap_LongTermDebt_01a025e3-7157-7ebe-9937-fc1715e6e9f5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_01a025e3-7157-7b67-8bcf-8f762b709735" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7f3d-a7a7-4af13ea76957" xlink:to="loc_us-gaap_LongTermDebtCurrent_01a025e3-7157-7b67-8bcf-8f762b709735" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_01a025e3-7157-7258-b25b-caed00498783" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7f3d-a7a7-4af13ea76957" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_01a025e3-7157-7258-b25b-caed00498783" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/DebtCreditFacilityDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#DebtCreditFacilityDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/DebtCreditFacilityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-7303-b945-b31eb8f77708" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-7303-b945-b31eb8f77708" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_01a025e3-7157-757f-9dd4-7f1df337bdfc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-7303-b945-b31eb8f77708" xlink:to="loc_us-gaap_CreditFacilityAxis_01a025e3-7157-757f-9dd4-7f1df337bdfc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a025e3-7157-757f-9dd4-7f1df337bdfc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_01a025e3-7157-757f-9dd4-7f1df337bdfc" xlink:to="loc_us-gaap_CreditFacilityDomain_01a025e3-7157-757f-9dd4-7f1df337bdfc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a025e3-7157-776c-9f32-cedc8bd7d9e2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_01a025e3-7157-757f-9dd4-7f1df337bdfc" xlink:to="loc_us-gaap_CreditFacilityDomain_01a025e3-7157-776c-9f32-cedc8bd7d9e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_CreditFacilityTermLoanMember_01a025e3-7157-795b-92fc-1414b4a58d21" xlink:href="peng-20260828.xsd#peng_CreditFacilityTermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a025e3-7157-776c-9f32-cedc8bd7d9e2" xlink:to="loc_peng_CreditFacilityTermLoanMember_01a025e3-7157-795b-92fc-1414b4a58d21" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_01a025e3-7157-7d2a-b4ac-7e5cc171b965" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a025e3-7157-776c-9f32-cedc8bd7d9e2" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_01a025e3-7157-7d2a-b4ac-7e5cc171b965" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_01a025e3-7157-7069-98b5-39bc30f7d27e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LetterOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a025e3-7157-776c-9f32-cedc8bd7d9e2" xlink:to="loc_us-gaap_LetterOfCreditMember_01a025e3-7157-7069-98b5-39bc30f7d27e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-7f50-9a5b-b07582d6d438" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-7303-b945-b31eb8f77708" xlink:to="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-7f50-9a5b-b07582d6d438" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-7f50-9a5b-b07582d6d438_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-7f50-9a5b-b07582d6d438" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-7f50-9a5b-b07582d6d438_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-714a-bc36-8fc40fc92f69" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-7f50-9a5b-b07582d6d438" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-714a-bc36-8fc40fc92f69" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TheCreditFacilityAgreementMember_01a025e3-7157-7408-8a87-6a86bd20c1a8" xlink:href="peng-20260828.xsd#peng_TheCreditFacilityAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-714a-bc36-8fc40fc92f69" xlink:to="loc_peng_TheCreditFacilityAgreementMember_01a025e3-7157-7408-8a87-6a86bd20c1a8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_EarnoutNoteMember_01a025e3-7157-786b-a2fe-b26d3b8349fd" xlink:href="peng-20260828.xsd#peng_EarnoutNoteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-714a-bc36-8fc40fc92f69" xlink:to="loc_peng_EarnoutNoteMember_01a025e3-7157-786b-a2fe-b26d3b8349fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_CreditFacilityTermLoanMember_01a025e3-7157-721a-8190-e5cea5a9c74f" xlink:href="peng-20260828.xsd#peng_CreditFacilityTermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-714a-bc36-8fc40fc92f69" xlink:to="loc_peng_CreditFacilityTermLoanMember_01a025e3-7157-721a-8190-e5cea5a9c74f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_LEDPurchasePriceNoteMember_01a025e3-7157-7374-8559-54edc454ba37" xlink:href="peng-20260828.xsd#peng_LEDPurchasePriceNoteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-714a-bc36-8fc40fc92f69" xlink:to="loc_peng_LEDPurchasePriceNoteMember_01a025e3-7157-7374-8559-54edc454ba37" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_A2025CreditAgreementMember_01a025e3-7157-7063-884f-a6f6080058aa" xlink:href="peng-20260828.xsd#peng_A2025CreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-714a-bc36-8fc40fc92f69" xlink:to="loc_peng_A2025CreditAgreementMember_01a025e3-7157-7063-884f-a6f6080058aa" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SeniorNotesDueTwoThousandTwentyFiveMember_01a0f1f7-3749-7aca-886d-fa6fe88311d9" xlink:href="peng-20260828.xsd#peng_SeniorNotesDueTwoThousandTwentyFiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-714a-bc36-8fc40fc92f69" xlink:to="loc_peng_SeniorNotesDueTwoThousandTwentyFiveMember_01a0f1f7-3749-7aca-886d-fa6fe88311d9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a025e3-7157-7d9f-972c-3f0888361380" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-7303-b945-b31eb8f77708" xlink:to="loc_srt_RangeAxis_01a025e3-7157-7d9f-972c-3f0888361380" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a025e3-7157-7d9f-972c-3f0888361380_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a025e3-7157-7d9f-972c-3f0888361380" xlink:to="loc_srt_RangeMember_01a025e3-7157-7d9f-972c-3f0888361380_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a025e3-7157-7d82-8f3d-a4a528a913f4" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a025e3-7157-7d9f-972c-3f0888361380" xlink:to="loc_srt_RangeMember_01a025e3-7157-7d82-8f3d-a4a528a913f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a025e3-7157-7ccb-a05c-c45f7bfa0e58" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a025e3-7157-7d82-8f3d-a4a528a913f4" xlink:to="loc_srt_MinimumMember_01a025e3-7157-7ccb-a05c-c45f7bfa0e58" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a025e3-7157-7842-8c40-e1efd4d4677b" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a025e3-7157-7d82-8f3d-a4a528a913f4" xlink:to="loc_srt_MaximumMember_01a025e3-7157-7842-8c40-e1efd4d4677b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_01a025e3-7157-73e6-a4a8-ff1bbf14841c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-7303-b945-b31eb8f77708" xlink:to="loc_us-gaap_VariableRateAxis_01a025e3-7157-73e6-a4a8-ff1bbf14841c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_01a025e3-7157-73e6-a4a8-ff1bbf14841c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_01a025e3-7157-73e6-a4a8-ff1bbf14841c" xlink:to="loc_us-gaap_VariableRateDomain_01a025e3-7157-73e6-a4a8-ff1bbf14841c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_01a025e3-7157-7c86-bee9-8c720c2cb6d0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_01a025e3-7157-73e6-a4a8-ff1bbf14841c" xlink:to="loc_us-gaap_VariableRateDomain_01a025e3-7157-7c86-bee9-8c720c2cb6d0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_01a025e3-7157-7d27-a6ea-bded5ce06aa0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_01a025e3-7157-7c86-bee9-8c720c2cb6d0" xlink:to="loc_us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_01a025e3-7157-7d27-a6ea-bded5ce06aa0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BaseRateMember_01a025e3-7157-76f4-9a25-6eca2edfb079" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BaseRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_01a025e3-7157-7c86-bee9-8c720c2cb6d0" xlink:to="loc_us-gaap_BaseRateMember_01a025e3-7157-76f4-9a25-6eca2edfb079" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_01a15639-c327-7d95-a29f-b059922b8fb1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-7303-b945-b31eb8f77708" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_01a15639-c327-7d95-a29f-b059922b8fb1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a15639-c327-7d95-a29f-b059922b8fb1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a15639-c327-7d95-a29f-b059922b8fb1" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a15639-c327-7d95-a29f-b059922b8fb1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a15639-c327-7c53-8267-7769b41bf852" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a15639-c327-7d95-a29f-b059922b8fb1" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a15639-c327-7c53-8267-7769b41bf852" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_01a15639-eab9-7fd8-8fbc-3bded2214dcd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LetterOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a15639-c327-7c53-8267-7769b41bf852" xlink:to="loc_us-gaap_LetterOfCreditMember_01a15639-eab9-7fd8-8fbc-3bded2214dcd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_GeneralPurposeBorrowingsMember_01a1563a-99f3-725a-a32e-cc0b42f1418e" xlink:href="peng-20260828.xsd#peng_GeneralPurposeBorrowingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a15639-c327-7c53-8267-7769b41bf852" xlink:to="loc_peng_GeneralPurposeBorrowingsMember_01a1563a-99f3-725a-a32e-cc0b42f1418e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_01a04938-df09-7149-93f0-b2805805ae1b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_01a04938-df09-7149-93f0-b2805805ae1b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DebtCovenantFirstLienLeverageRatio_01a04938-df09-7d92-ad87-90c1c0435ae6" xlink:href="peng-20260828.xsd#peng_DebtCovenantFirstLienLeverageRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_peng_DebtCovenantFirstLienLeverageRatio_01a04938-df09-7d92-ad87-90c1c0435ae6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DebtCovenantReductionOfDebtAmountUsedForThePurposesOfCalculatingDebtCovenantRatios_01a04938-df09-7e43-af40-5ab53ecae40e" xlink:href="peng-20260828.xsd#peng_DebtCovenantReductionOfDebtAmountUsedForThePurposesOfCalculatingDebtCovenantRatios"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_peng_DebtCovenantReductionOfDebtAmountUsedForThePurposesOfCalculatingDebtCovenantRatios_01a04938-df09-7e43-af40-5ab53ecae40e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebt_01a04937-d348-78c0-aca9-94275f997838" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_us-gaap_RepaymentsOfDebt_01a04937-d348-78c0-aca9-94275f997838" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01a048ab-ae75-7aaf-acef-2fb867555c7f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01a048ab-ae75-7aaf-acef-2fb867555c7f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_01a048ab-ae75-788f-b231-9478517a0f07" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_01a048ab-ae75-788f-b231-9478517a0f07" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromLinesOfCredit_01a048ab-ae75-72e9-ac9c-dec41f01d831" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromLinesOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_us-gaap_ProceedsFromLinesOfCredit_01a048ab-ae75-72e9-ac9c-dec41f01d831" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_01a048ab-ae75-7510-ac14-4bc380509ba8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_01a048ab-ae75-7510-ac14-4bc380509ba8" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_01a048ab-ae75-7068-b2fd-2ca3a043795d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_01a048ab-ae75-7068-b2fd-2ca3a043795d" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_01a048ab-ae75-79ac-8f23-f6417285c77f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_01a048ab-ae75-79ac-8f23-f6417285c77f" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_01a048ab-ae75-7ebe-bb93-ef0974d0c399" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_01a048ab-ae75-7ebe-bb93-ef0974d0c399" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnamortizedDebtIssuanceExpense_01a048ab-ae75-7de8-bdd5-92a12a3a3142" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnamortizedDebtIssuanceExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_us-gaap_UnamortizedDebtIssuanceExpense_01a048ab-ae75-7de8-bdd5-92a12a3a3142" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_01a048ab-ae75-7750-849d-e2d348bbb767" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_01a048ab-ae75-7750-849d-e2d348bbb767" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_01a048ab-ae75-7bc3-b0ca-0e7e45d529b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_01a048ab-ae75-7bc3-b0ca-0e7e45d529b3" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DebtInstrumentCovenantFirstLienLeverageRatioMaximum_01a048ab-e19f-7120-86c7-2441258a4833" xlink:href="peng-20260828.xsd#peng_DebtInstrumentCovenantFirstLienLeverageRatioMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_peng_DebtInstrumentCovenantFirstLienLeverageRatioMaximum_01a048ab-e19f-7120-86c7-2441258a4833" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DebtInstrumentCovenantTotalLeverageRatioMaximum_01a048ab-e19f-7e49-933b-3d944f5590ed" xlink:href="peng-20260828.xsd#peng_DebtInstrumentCovenantTotalLeverageRatioMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_peng_DebtInstrumentCovenantTotalLeverageRatioMaximum_01a048ab-e19f-7e49-933b-3d944f5590ed" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DebtInstrumentCovenantAcquisitionRelatedIncreaseInTotalLeverageRatio_01a048ab-e19f-7d35-ac4b-0012dd2383ba" xlink:href="peng-20260828.xsd#peng_DebtInstrumentCovenantAcquisitionRelatedIncreaseInTotalLeverageRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_peng_DebtInstrumentCovenantAcquisitionRelatedIncreaseInTotalLeverageRatio_01a048ab-e19f-7d35-ac4b-0012dd2383ba" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DebtInstrumentCovenantInterestCoverageRatioMinimum_01a048ab-e19f-7ba3-964c-89e8de655de6" xlink:href="peng-20260828.xsd#peng_DebtInstrumentCovenantInterestCoverageRatioMinimum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_peng_DebtInstrumentCovenantInterestCoverageRatioMinimum_01a048ab-e19f-7ba3-964c-89e8de655de6" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DebtInstrumentCovenantConsolidatedDebtMaximum_01a048ab-e19f-72b9-9cb7-f3017d3dcf8b" xlink:href="peng-20260828.xsd#peng_DebtInstrumentCovenantConsolidatedDebtMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-788e-bd30-9f853ba1db91" xlink:to="loc_peng_DebtInstrumentCovenantConsolidatedDebtMaximum_01a048ab-e19f-72b9-9cb7-f3017d3dcf8b" xlink:type="arc" order="18"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/DebtConvertibleSeniorNotesDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#DebtConvertibleSeniorNotesDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/DebtConvertibleSeniorNotesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-70d3-8d43-3a04942dbd2b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-70d3-8d43-3a04942dbd2b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-7eaf-aeb9-d66946fe0a00" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-70d3-8d43-3a04942dbd2b" xlink:to="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-7eaf-aeb9-d66946fe0a00" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-7eaf-aeb9-d66946fe0a00_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-7eaf-aeb9-d66946fe0a00" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-7eaf-aeb9-d66946fe0a00_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-71a2-aee3-c1a4fe014da1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-7eaf-aeb9-d66946fe0a00" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-71a2-aee3-c1a4fe014da1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandTwentySixMember_01a025e3-7157-7967-bc08-4340bf784e96" xlink:href="peng-20260828.xsd#peng_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandTwentySixMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-71a2-aee3-c1a4fe014da1" xlink:to="loc_peng_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandTwentySixMember_01a025e3-7157-7967-bc08-4340bf784e96" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TwoPercentConvertibleSeniorNotesDueTwoThousandTwentyNineMember_01a025e3-7157-7b74-9881-f224fc8aa5f2" xlink:href="peng-20260828.xsd#peng_TwoPercentConvertibleSeniorNotesDueTwoThousandTwentyNineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-71a2-aee3-c1a4fe014da1" xlink:to="loc_peng_TwoPercentConvertibleSeniorNotesDueTwoThousandTwentyNineMember_01a025e3-7157-7b74-9881-f224fc8aa5f2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TwoPercentConvertibleSeniorNotesDue2030Member_01a025e3-7157-7593-9557-e7d6f0f5afb2" xlink:href="peng-20260828.xsd#peng_TwoPercentConvertibleSeniorNotesDue2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-71a2-aee3-c1a4fe014da1" xlink:to="loc_peng_TwoPercentConvertibleSeniorNotesDue2030Member_01a025e3-7157-7593-9557-e7d6f0f5afb2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SeniorNotesDueTwoThousandThirtyMember_01a025e3-7157-7635-8f41-3e77b5392d33" xlink:href="peng-20260828.xsd#peng_SeniorNotesDueTwoThousandThirtyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-71a2-aee3-c1a4fe014da1" xlink:to="loc_peng_SeniorNotesDueTwoThousandThirtyMember_01a025e3-7157-7635-8f41-3e77b5392d33" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TwoPercentConvertibleSeniorNotesDue2031Member_01a04842-046b-702a-96e6-96433104230f" xlink:href="peng-20260828.xsd#peng_TwoPercentConvertibleSeniorNotesDue2031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-71a2-aee3-c1a4fe014da1" xlink:to="loc_peng_TwoPercentConvertibleSeniorNotesDue2031Member_01a04842-046b-702a-96e6-96433104230f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SeniorNotesDueTwoThousandThirtyOneMember_01a048ad-18c3-779d-bccb-dabaa56907f5" xlink:href="peng-20260828.xsd#peng_SeniorNotesDueTwoThousandThirtyOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-71a2-aee3-c1a4fe014da1" xlink:to="loc_peng_SeniorNotesDueTwoThousandThirtyOneMember_01a048ad-18c3-779d-bccb-dabaa56907f5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a025e3-7157-7cfd-aed9-9b390de1916d" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-70d3-8d43-3a04942dbd2b" xlink:to="loc_srt_RangeAxis_01a025e3-7157-7cfd-aed9-9b390de1916d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a025e3-7157-7cfd-aed9-9b390de1916d_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a025e3-7157-7cfd-aed9-9b390de1916d" xlink:to="loc_srt_RangeMember_01a025e3-7157-7cfd-aed9-9b390de1916d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a025e3-7157-7d61-8103-ff60c1dd74d1" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a025e3-7157-7cfd-aed9-9b390de1916d" xlink:to="loc_srt_RangeMember_01a025e3-7157-7d61-8103-ff60c1dd74d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a025e3-7157-7645-ab77-2680dd8e1ca4" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a025e3-7157-7d61-8103-ff60c1dd74d1" xlink:to="loc_srt_MinimumMember_01a025e3-7157-7645-ab77-2680dd8e1ca4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a025e3-7157-7ba1-acb1-3a37d8a0d0fb" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a025e3-7157-7d61-8103-ff60c1dd74d1" xlink:to="loc_srt_MaximumMember_01a025e3-7157-7ba1-acb1-3a37d8a0d0fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_01a11cfb-b256-7bd1-8548-7549b97fbdff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-70d3-8d43-3a04942dbd2b" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_01a11cfb-b256-7bd1-8548-7549b97fbdff" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a11cfb-b256-7bd1-8548-7549b97fbdff_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a11cfb-b256-7bd1-8548-7549b97fbdff" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a11cfb-b256-7bd1-8548-7549b97fbdff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a11cfb-b256-7ba2-a7eb-38f860814299" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a11cfb-b256-7bd1-8548-7549b97fbdff" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a11cfb-b256-7ba2-a7eb-38f860814299" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtMember_01a11cfb-e71e-78c6-8b2d-8ec30aade650" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConvertibleDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a11cfb-b256-7ba2-a7eb-38f860814299" xlink:to="loc_us-gaap_ConvertibleDebtMember_01a11cfb-e71e-78c6-8b2d-8ec30aade650" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DebtInstrumentConvertibleTermsOfConversionAxis_01a11cfc-b252-7fcf-98b5-347db00a3201" xlink:href="peng-20260828.xsd#peng_DebtInstrumentConvertibleTermsOfConversionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-70d3-8d43-3a04942dbd2b" xlink:to="loc_peng_DebtInstrumentConvertibleTermsOfConversionAxis_01a11cfc-b252-7fcf-98b5-347db00a3201" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DebtInstrumentConvertibleTermsOfConversionDomain_01a11cfc-b252-7fcf-98b5-347db00a3201_default" xlink:href="peng-20260828.xsd#peng_DebtInstrumentConvertibleTermsOfConversionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_peng_DebtInstrumentConvertibleTermsOfConversionAxis_01a11cfc-b252-7fcf-98b5-347db00a3201" xlink:to="loc_peng_DebtInstrumentConvertibleTermsOfConversionDomain_01a11cfc-b252-7fcf-98b5-347db00a3201_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DebtInstrumentConvertibleTermsOfConversionDomain_01a11cfc-b252-7884-89f8-0250fa266ffb" xlink:href="peng-20260828.xsd#peng_DebtInstrumentConvertibleTermsOfConversionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_peng_DebtInstrumentConvertibleTermsOfConversionAxis_01a11cfc-b252-7fcf-98b5-347db00a3201" xlink:to="loc_peng_DebtInstrumentConvertibleTermsOfConversionDomain_01a11cfc-b252-7884-89f8-0250fa266ffb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DebtConversionTermsOneMember_01a11cfd-2ea3-7713-839c-9a4d18d3d04f" xlink:href="peng-20260828.xsd#peng_DebtConversionTermsOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_DebtInstrumentConvertibleTermsOfConversionDomain_01a11cfc-b252-7884-89f8-0250fa266ffb" xlink:to="loc_peng_DebtConversionTermsOneMember_01a11cfd-2ea3-7713-839c-9a4d18d3d04f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DebtConversionTermsTwoMember_01a11cfd-9c0e-7859-8724-31c97150ea55" xlink:href="peng-20260828.xsd#peng_DebtConversionTermsTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_DebtInstrumentConvertibleTermsOfConversionDomain_01a11cfc-b252-7884-89f8-0250fa266ffb" xlink:to="loc_peng_DebtConversionTermsTwoMember_01a11cfd-9c0e-7859-8724-31c97150ea55" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a12f03-abd1-72cf-8b79-d596163b8632" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-70d3-8d43-3a04942dbd2b" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a12f03-abd1-72cf-8b79-d596163b8632" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a12f03-abd1-72cf-8b79-d596163b8632_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a12f03-abd1-72cf-8b79-d596163b8632" xlink:to="loc_us-gaap_EquityComponentDomain_01a12f03-abd1-72cf-8b79-d596163b8632_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a12f03-abd2-7b27-a7c7-07dac9e5f612" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a12f03-abd1-72cf-8b79-d596163b8632" xlink:to="loc_us-gaap_EquityComponentDomain_01a12f03-abd2-7b27-a7c7-07dac9e5f612" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_01a12f03-abd2-7168-81fd-c2d101359c07" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a12f03-abd2-7b27-a7c7-07dac9e5f612" xlink:to="loc_us-gaap_CommonStockMember_01a12f03-abd2-7168-81fd-c2d101359c07" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_01a12f03-abd2-7ad6-9cb9-e22b28b1485c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a12f03-abd2-7b27-a7c7-07dac9e5f612" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_01a12f03-abd2-7ad6-9cb9-e22b28b1485c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtConversionOriginalDebtAmount1_01a11ce3-d3d5-716b-bbd0-2c4b2c1d1a32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtConversionOriginalDebtAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_DebtConversionOriginalDebtAmount1_01a11ce3-d3d5-716b-bbd0-2c4b2c1d1a32" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfConvertibleDebt_01a048ac-7909-7111-ba8c-a9b43c60b3a5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfConvertibleDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_RepaymentsOfConvertibleDebt_01a048ac-7909-7111-ba8c-a9b43c60b3a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_01a048ac-7909-7d71-a7b8-c1151ca4ad7d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_01a048ac-7909-7d71-a7b8-c1151ca4ad7d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrentAndNoncurrent_01a0f0e7-3240-789e-a534-96a98d63f94d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestPayableCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_InterestPayableCurrentAndNoncurrent_01a0f0e7-3240-789e-a534-96a98d63f94d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_01a048ac-7909-7fda-ba54-a3300f1cbc62" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_01a048ac-7909-7fda-ba54-a3300f1cbc62" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InducedConversionOfConvertibleDebtExpense_01a048ac-7909-75fb-96f7-a25ecaa27dbf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InducedConversionOfConvertibleDebtExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_InducedConversionOfConvertibleDebtExpense_01a048ac-7909-75fb-96f7-a25ecaa27dbf" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_01a12f03-abd2-7ece-9278-2ce05768df68" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_01a12f03-abd2-7ece-9278-2ce05768df68" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_01a048ac-7909-7991-a932-2d443b8da7fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_LongTermDebt_01a048ac-7909-7991-a932-2d443b8da7fd" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExtinguishmentOfDebtAmount_01a048ac-7909-70e9-b921-fe6e40190846" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ExtinguishmentOfDebtAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_ExtinguishmentOfDebtAmount_01a048ac-7909-70e9-b921-fe6e40190846" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_01a048ac-7909-70cc-b7c1-9f6b855ed316" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_01a048ac-7909-70cc-b7c1-9f6b855ed316" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01a048ac-7909-738e-9dd7-258c3267cbb9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01a048ac-7909-738e-9dd7-258c3267cbb9" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebtBeforeWriteOffOfDeferredDebtIssuanceCost_01a048ac-7909-7fd1-a2f8-f98f001cc214" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebtBeforeWriteOffOfDeferredDebtIssuanceCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebtBeforeWriteOffOfDeferredDebtIssuanceCost_01a048ac-7909-7fd1-a2f8-f98f001cc214" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost_01a048ac-7909-78ff-8a51-18bf5a849f6a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WriteOffOfDeferredDebtIssuanceCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost_01a048ac-7909-78ff-8a51-18bf5a849f6a" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_01a048ac-7909-7159-863c-62cf22c70b74" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_01a048ac-7909-7159-863c-62cf22c70b74" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDebtNetOfIssuanceCosts_01a048ac-7909-7b3a-9452-773352ebf1f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromDebtNetOfIssuanceCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_ProceedsFromDebtNetOfIssuanceCosts_01a048ac-7909-7b3a-9452-773352ebf1f6" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_01a11cee-3448-7426-9ee0-555562405754" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_01a11cee-3448-7426-9ee0-555562405754" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleConversionPrice1_01a048ac-7909-7a2c-b1e4-46698a9c24ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentConvertibleConversionPrice1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_DebtInstrumentConvertibleConversionPrice1_01a048ac-7909-7a2c-b1e4-46698a9c24ff" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger_01a048ac-7909-73cd-9283-30045648cc29" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger_01a048ac-7909-73cd-9283-30045648cc29" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleThresholdTradingDays_01a048ac-7909-7985-8b92-52a4c05f4599" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentConvertibleThresholdTradingDays"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_DebtInstrumentConvertibleThresholdTradingDays_01a048ac-7909-7985-8b92-52a4c05f4599" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1_01a048ac-7909-7838-adc3-20ad9e05e267" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1_01a048ac-7909-7838-adc3-20ad9e05e267" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleConversionRatio1_01a048ad-18c3-7465-b138-f33c5335441c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentConvertibleConversionRatio1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_DebtInstrumentConvertibleConversionRatio1_01a048ad-18c3-7465-b138-f33c5335441c" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_PaymentsToAcquireCappedCalls_01a048ad-7afa-7076-8e6f-f3bc317478b8" xlink:href="peng-20260828.xsd#peng_PaymentsToAcquireCappedCalls"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_peng_PaymentsToAcquireCappedCalls_01a048ad-7afa-7076-8e6f-f3bc317478b8" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeCapPrice_01a048ad-7afa-7909-9d64-5e0697018743" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeCapPrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_DerivativeCapPrice_01a048ad-7afa-7909-9d64-5e0697018743" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_01a048ae-12d0-7e06-9945-86810614cd09" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_01a048ae-12d0-7e06-9945-86810614cd09" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_01a12f5b-f3ec-708d-9e1e-c7f350acdfbb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_DerivativeNotionalAmount_01a12f5b-f3ec-708d-9e1e-c7f350acdfbb" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonShares_01a048ae-12d0-76bf-80fe-230eb4c71ec3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_TreasuryStockCommonShares_01a048ae-12d0-76bf-80fe-230eb4c71ec3" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_01a048ae-9caa-7e08-b76a-2bc92c091387" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7bae-a027-7307fc3ee678" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_01a048ae-9caa-7e08-b76a-2bc92c091387" xlink:type="arc" order="26"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/DebtInterestExpenseDisclosureDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#DebtInterestExpenseDisclosureDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/DebtInterestExpenseDisclosureDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7e25-8a9e-0608d0b36feb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-7f9c-a27b-97dc17408089" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7e25-8a9e-0608d0b36feb" xlink:to="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-7f9c-a27b-97dc17408089" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-771c-bf86-0288760cb7ba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a025e3-7157-7f9c-a27b-97dc17408089" xlink:to="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-771c-bf86-0288760cb7ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-771c-bf86-0288760cb7ba_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-771c-bf86-0288760cb7ba" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-771c-bf86-0288760cb7ba_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-73c6-9769-98a436ead62b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-771c-bf86-0288760cb7ba" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-73c6-9769-98a436ead62b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandTwentySixMember_01a025e3-7157-7fb3-9bb8-f3322ac37e6d" xlink:href="peng-20260828.xsd#peng_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandTwentySixMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-73c6-9769-98a436ead62b" xlink:to="loc_peng_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandTwentySixMember_01a025e3-7157-7fb3-9bb8-f3322ac37e6d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebtExcludingAmortization_01a025e3-7157-79f1-96df-ebe8eb8dc1b8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseDebtExcludingAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7e25-8a9e-0608d0b36feb" xlink:to="loc_us-gaap_InterestExpenseDebtExcludingAmortization_01a025e3-7157-79f1-96df-ebe8eb8dc1b8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts_01a025e3-7157-703d-8ef3-df1e268a6108" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfFinancingCostsAndDiscounts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7e25-8a9e-0608d0b36feb" xlink:to="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts_01a025e3-7157-703d-8ef3-df1e268a6108" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebt_01a025e3-7157-73ef-b576-d82c5448116d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a025e3-7157-7e25-8a9e-0608d0b36feb" xlink:to="loc_us-gaap_InterestExpenseDebt_01a025e3-7157-73ef-b576-d82c5448116d" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/LeasesAdditionalInformationDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#LeasesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/LeasesAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_01a025e3-7157-7f9c-a5a4-419a29a80219" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_01a025e3-7157-75bc-85c4-9c87938daf81" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_01a025e3-7157-7f9c-a5a4-419a29a80219" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_01a025e3-7157-75bc-85c4-9c87938daf81" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a025e3-7157-7aa3-aec7-4c9fef9f7837" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_01a025e3-7157-75bc-85c4-9c87938daf81" xlink:to="loc_srt_RangeAxis_01a025e3-7157-7aa3-aec7-4c9fef9f7837" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a025e3-7157-7aa3-aec7-4c9fef9f7837_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a025e3-7157-7aa3-aec7-4c9fef9f7837" xlink:to="loc_srt_RangeMember_01a025e3-7157-7aa3-aec7-4c9fef9f7837_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a025e3-7157-72dc-9d00-16bce1576896" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a025e3-7157-7aa3-aec7-4c9fef9f7837" xlink:to="loc_srt_RangeMember_01a025e3-7157-72dc-9d00-16bce1576896" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a025e3-7157-7419-912f-1c7403b17504" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a025e3-7157-72dc-9d00-16bce1576896" xlink:to="loc_srt_MinimumMember_01a025e3-7157-7419-912f-1c7403b17504" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a025e3-7157-7955-b44a-b7de0f210a7b" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a025e3-7157-72dc-9d00-16bce1576896" xlink:to="loc_srt_MaximumMember_01a025e3-7157-7955-b44a-b7de0f210a7b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasePayments_01a025e3-7157-7b22-a723-9e49c3b387b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeasePayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_01a025e3-7157-7f9c-a5a4-419a29a80219" xlink:to="loc_us-gaap_OperatingLeasePayments_01a025e3-7157-7b22-a723-9e49c3b387b2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_01a025e3-7157-7027-ae94-7ffe7e9d0b38" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_01a025e3-7157-7f9c-a5a4-419a29a80219" xlink:to="loc_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_01a025e3-7157-7027-ae94-7ffe7e9d0b38" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_01a025e3-7157-751d-999d-a7991715df7d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_01a025e3-7157-7f9c-a5a4-419a29a80219" xlink:to="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_01a025e3-7157-751d-999d-a7991715df7d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseTermOfContract_01a025e3-7157-7e1b-a5f2-12e423b00464" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseTermOfContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_01a025e3-7157-7f9c-a5a4-419a29a80219" xlink:to="loc_us-gaap_LesseeOperatingLeaseTermOfContract_01a025e3-7157-7e1b-a5f2-12e423b00464" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_01a025e3-7157-74a9-956c-b09e4a0cced5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_01a025e3-7157-7f9c-a5a4-419a29a80219" xlink:to="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_01a025e3-7157-74a9-956c-b09e4a0cced5" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/TemporaryEquityDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#TemporaryEquityDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/TemporaryEquityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-72cf-bc51-d85327751077" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_01a025e3-7157-73e9-8b3b-a64814f94ccb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-72cf-bc51-d85327751077" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_01a025e3-7157-73e9-8b3b-a64814f94ccb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_01a025e3-7157-7795-b21a-24cd36538444" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a025e3-7157-73e9-8b3b-a64814f94ccb" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_01a025e3-7157-7795-b21a-24cd36538444" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a025e3-7157-7795-b21a-24cd36538444_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_01a025e3-7157-7795-b21a-24cd36538444" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a025e3-7157-7795-b21a-24cd36538444_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a025e3-7157-71fd-b2df-92d8dbd9b2cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_01a025e3-7157-7795-b21a-24cd36538444" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a025e3-7157-71fd-b2df-92d8dbd9b2cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrivatePlacementMember_01a025e3-7157-7df2-944c-c35436742c1f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrivatePlacementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a025e3-7157-71fd-b2df-92d8dbd9b2cd" xlink:to="loc_us-gaap_PrivatePlacementMember_01a025e3-7157-7df2-944c-c35436742c1f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a025e3-7157-7461-8477-095903401c3c" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a025e3-7157-73e9-8b3b-a64814f94ccb" xlink:to="loc_srt_RangeAxis_01a025e3-7157-7461-8477-095903401c3c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a025e3-7157-7461-8477-095903401c3c_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a025e3-7157-7461-8477-095903401c3c" xlink:to="loc_srt_RangeMember_01a025e3-7157-7461-8477-095903401c3c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a025e3-7157-755a-9c8a-d91abef349fc" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a025e3-7157-7461-8477-095903401c3c" xlink:to="loc_srt_RangeMember_01a025e3-7157-755a-9c8a-d91abef349fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a025e3-7157-78eb-813a-8b457441a094" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a025e3-7157-755a-9c8a-d91abef349fc" xlink:to="loc_srt_MinimumMember_01a025e3-7157-78eb-813a-8b457441a094" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a025e3-7157-7cb9-9b51-965d37823de3" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a025e3-7157-755a-9c8a-d91abef349fc" xlink:to="loc_srt_MaximumMember_01a025e3-7157-7cb9-9b51-965d37823de3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_01a025e3-7157-784a-9668-ab614081f33c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-72cf-bc51-d85327751077" xlink:to="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_01a025e3-7157-784a-9668-ab614081f33c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockPricePerShare_01a025e3-7157-75fa-909e-965a163da2b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockPricePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-72cf-bc51-d85327751077" xlink:to="loc_us-gaap_SaleOfStockPricePerShare_01a025e3-7157-75fa-909e-965a163da2b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_01a025e3-7157-7766-bdc3-14fcb456f42f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockConsiderationReceivedOnTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-72cf-bc51-d85327751077" xlink:to="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_01a025e3-7157-7766-bdc3-14fcb456f42f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests_01a025e3-7157-73fe-b0f6-d6e5680cdbec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-72cf-bc51-d85327751077" xlink:to="loc_us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests_01a025e3-7157-73fe-b0f6-d6e5680cdbec" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SaleOfStockConvertibleThresholdConsecutiveTradingDays_01a025e3-7157-7979-b61e-3cdf7a3bf77a" xlink:href="peng-20260828.xsd#peng_SaleOfStockConvertibleThresholdConsecutiveTradingDays"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-72cf-bc51-d85327751077" xlink:to="loc_peng_SaleOfStockConvertibleThresholdConsecutiveTradingDays_01a025e3-7157-7979-b61e-3cdf7a3bf77a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_PreferredStockConvertibleConversionPriceThresholdPercentage_01a025e3-7157-7482-93e6-ca998753caf8" xlink:href="peng-20260828.xsd#peng_PreferredStockConvertibleConversionPriceThresholdPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-72cf-bc51-d85327751077" xlink:to="loc_peng_PreferredStockConvertibleConversionPriceThresholdPercentage_01a025e3-7157-7482-93e6-ca998753caf8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockConvertibleConversionPrice_01a025e3-7157-73cd-8d30-e3cffe33a17a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockConvertibleConversionPrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-72cf-bc51-d85327751077" xlink:to="loc_us-gaap_PreferredStockConvertibleConversionPrice_01a025e3-7157-73cd-8d30-e3cffe33a17a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockDividendRatePercentage_01a025e3-7157-7a0c-b9b8-107cdcfe80c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockDividendRatePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-72cf-bc51-d85327751077" xlink:to="loc_us-gaap_PreferredStockDividendRatePercentage_01a025e3-7157-7a0c-b9b8-107cdcfe80c7" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsPreferredStock_01a025e3-7157-7b30-ad42-6b62160ec562" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendsPreferredStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-72cf-bc51-d85327751077" xlink:to="loc_us-gaap_DividendsPreferredStock_01a025e3-7157-7b30-ad42-6b62160ec562" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock_01a025e3-7157-7b73-a91a-142114fac971" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-72cf-bc51-d85327751077" xlink:to="loc_us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock_01a025e3-7157-7b73-a91a-142114fac971" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsPayableCurrentAndNoncurrent_01a025e3-7157-70be-8523-18821b203a82" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendsPayableCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-72cf-bc51-d85327751077" xlink:to="loc_us-gaap_DividendsPayableCurrentAndNoncurrent_01a025e3-7157-70be-8523-18821b203a82" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TemporaryEquityRedemptionRightsNumberOfInstallments_01a025e3-7157-7178-a78a-d3a6cdf69c05" xlink:href="peng-20260828.xsd#peng_TemporaryEquityRedemptionRightsNumberOfInstallments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-72cf-bc51-d85327751077" xlink:to="loc_peng_TemporaryEquityRedemptionRightsNumberOfInstallments_01a025e3-7157-7178-a78a-d3a6cdf69c05" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TemporaryEquityRedemptionRightsNoticePeriod_01a025e3-7157-79d3-9774-ce95b6181f1c" xlink:href="peng-20260828.xsd#peng_TemporaryEquityRedemptionRightsNoticePeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-72cf-bc51-d85327751077" xlink:to="loc_peng_TemporaryEquityRedemptionRightsNoticePeriod_01a025e3-7157-79d3-9774-ce95b6181f1c" xlink:type="arc" order="12"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/EquityAdditionalInformationDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#EquityAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/EquityAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-7886-a543-b1a67dbae7bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_01a025e3-7157-7912-b26f-d358a32f4df2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-7886-a543-b1a67dbae7bb" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_01a025e3-7157-7912-b26f-d358a32f4df2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ShareRepurchaseProgramAxis_01a025e3-7157-7275-9d9b-36f638d5a1c9" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ShareRepurchaseProgramAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a025e3-7157-7912-b26f-d358a32f4df2" xlink:to="loc_srt_ShareRepurchaseProgramAxis_01a025e3-7157-7275-9d9b-36f638d5a1c9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ShareRepurchaseProgramDomain_01a025e3-7157-7275-9d9b-36f638d5a1c9_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ShareRepurchaseProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ShareRepurchaseProgramAxis_01a025e3-7157-7275-9d9b-36f638d5a1c9" xlink:to="loc_srt_ShareRepurchaseProgramDomain_01a025e3-7157-7275-9d9b-36f638d5a1c9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ShareRepurchaseProgramDomain_01a025e3-7157-72ff-bb4f-a84ab7e6c187" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ShareRepurchaseProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ShareRepurchaseProgramAxis_01a025e3-7157-7275-9d9b-36f638d5a1c9" xlink:to="loc_srt_ShareRepurchaseProgramDomain_01a025e3-7157-72ff-bb4f-a84ab7e6c187" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_StockRepurchasePrograms2024And2025Member_01a025e3-7157-7f78-9ac6-425c3280d904" xlink:href="peng-20260828.xsd#peng_StockRepurchasePrograms2024And2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ShareRepurchaseProgramDomain_01a025e3-7157-72ff-bb4f-a84ab7e6c187" xlink:to="loc_peng_StockRepurchasePrograms2024And2025Member_01a025e3-7157-7f78-9ac6-425c3280d904" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_StockRepurchaseProgram2022Member_01a025e3-7157-7a86-9862-5eb0d27842ad" xlink:href="peng-20260828.xsd#peng_StockRepurchaseProgram2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ShareRepurchaseProgramDomain_01a025e3-7157-72ff-bb4f-a84ab7e6c187" xlink:to="loc_peng_StockRepurchaseProgram2022Member_01a025e3-7157-7a86-9862-5eb0d27842ad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_OrdinaryShareRepurchasesForWithholdingMember_01a025e3-7157-7f46-87cd-b7725af682da" xlink:href="peng-20260828.xsd#peng_OrdinaryShareRepurchasesForWithholdingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ShareRepurchaseProgramDomain_01a025e3-7157-72ff-bb4f-a84ab7e6c187" xlink:to="loc_peng_OrdinaryShareRepurchasesForWithholdingMember_01a025e3-7157-7f46-87cd-b7725af682da" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a025e3-7157-77c5-9376-72d6d8cab2cf" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a025e3-7157-7912-b26f-d358a32f4df2" xlink:to="loc_srt_RangeAxis_01a025e3-7157-77c5-9376-72d6d8cab2cf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a025e3-7157-77c5-9376-72d6d8cab2cf_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a025e3-7157-77c5-9376-72d6d8cab2cf" xlink:to="loc_srt_RangeMember_01a025e3-7157-77c5-9376-72d6d8cab2cf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a025e3-7157-7473-91ee-c6ea84ad2de9" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a025e3-7157-77c5-9376-72d6d8cab2cf" xlink:to="loc_srt_RangeMember_01a025e3-7157-7473-91ee-c6ea84ad2de9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a025e3-7157-7992-810e-bcd4a84127b5" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a025e3-7157-7473-91ee-c6ea84ad2de9" xlink:to="loc_srt_MinimumMember_01a025e3-7157-7992-810e-bcd4a84127b5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a025e3-7157-72bf-a509-47ec5d0376de" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a025e3-7157-7473-91ee-c6ea84ad2de9" xlink:to="loc_srt_MaximumMember_01a025e3-7157-72bf-a509-47ec5d0376de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_01a025e3-7157-7448-8b67-b36e30bc601f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a025e3-7157-7912-b26f-d358a32f4df2" xlink:to="loc_srt_OwnershipAxis_01a025e3-7157-7448-8b67-b36e30bc601f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_01a025e3-7157-7448-8b67-b36e30bc601f_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_01a025e3-7157-7448-8b67-b36e30bc601f" xlink:to="loc_srt_OwnershipDomain_01a025e3-7157-7448-8b67-b36e30bc601f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_01a025e3-7157-7860-816b-f7dcd80c398a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_01a025e3-7157-7448-8b67-b36e30bc601f" xlink:to="loc_srt_OwnershipDomain_01a025e3-7157-7860-816b-f7dcd80c398a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SMARTBrazilMember_01a025e3-7157-7aa7-9a7d-d5c23a9c1727" xlink:href="peng-20260828.xsd#peng_SMARTBrazilMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_01a025e3-7157-7860-816b-f7dcd80c398a" xlink:to="loc_peng_SMARTBrazilMember_01a025e3-7157-7aa7-9a7d-d5c23a9c1727" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_CreeJointVentureMember_01a025e3-7157-7b72-9aa5-69a0b0922c3b" xlink:href="peng-20260828.xsd#peng_CreeJointVentureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_01a025e3-7157-7860-816b-f7dcd80c398a" xlink:to="loc_peng_CreeJointVentureMember_01a025e3-7157-7b72-9aa5-69a0b0922c3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_01a025e3-7157-74a2-a9e1-a985febfbf7f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a025e3-7157-7912-b26f-d358a32f4df2" xlink:to="loc_dei_LegalEntityAxis_01a025e3-7157-74a2-a9e1-a985febfbf7f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a025e3-7157-74a2-a9e1-a985febfbf7f_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_01a025e3-7157-74a2-a9e1-a985febfbf7f" xlink:to="loc_dei_EntityDomain_01a025e3-7157-74a2-a9e1-a985febfbf7f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a025e3-7157-7436-85c3-2d4c79df1f1a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_01a025e3-7157-74a2-a9e1-a985febfbf7f" xlink:to="loc_dei_EntityDomain_01a025e3-7157-7436-85c3-2d4c79df1f1a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_LexarEuropeBVMember_01a025e3-7157-77a2-86a5-d3f9f46ab5da" xlink:href="peng-20260828.xsd#peng_LexarEuropeBVMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_01a025e3-7157-7436-85c3-2d4c79df1f1a" xlink:to="loc_peng_LexarEuropeBVMember_01a025e3-7157-77a2-86a5-d3f9f46ab5da" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SmartGlobalHoldingsIncMember_01a025e3-7157-793c-8439-2355ed75d5eb" xlink:href="peng-20260828.xsd#peng_SmartGlobalHoldingsIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_01a025e3-7157-7436-85c3-2d4c79df1f1a" xlink:to="loc_peng_SmartGlobalHoldingsIncMember_01a025e3-7157-793c-8439-2355ed75d5eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SananMember_01a025e3-7157-79f9-bb0f-e7cde83b34be" xlink:href="peng-20260828.xsd#peng_SananMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_01a025e3-7157-7436-85c3-2d4c79df1f1a" xlink:to="loc_peng_SananMember_01a025e3-7157-79f9-bb0f-e7cde83b34be" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a025e3-7157-7a43-83f6-2c8a14193f44" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a025e3-7157-7912-b26f-d358a32f4df2" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a025e3-7157-7a43-83f6-2c8a14193f44" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a025e3-7157-7a43-83f6-2c8a14193f44_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a025e3-7157-7a43-83f6-2c8a14193f44" xlink:to="loc_us-gaap_EquityComponentDomain_01a025e3-7157-7a43-83f6-2c8a14193f44_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a025e3-7157-740c-b59a-b2770cac07b7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a025e3-7157-7a43-83f6-2c8a14193f44" xlink:to="loc_us-gaap_EquityComponentDomain_01a025e3-7157-740c-b59a-b2770cac07b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a025e3-7157-728b-92c2-159ad3a52826" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a025e3-7157-740c-b59a-b2770cac07b7" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a025e3-7157-728b-92c2-159ad3a52826" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ParentMember_01a025e3-7157-750e-9f5d-131749dfdf96" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a025e3-7157-740c-b59a-b2770cac07b7" xlink:to="loc_us-gaap_ParentMember_01a025e3-7157-750e-9f5d-131749dfdf96" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_01a025e3-7157-788d-8096-0201317b6cff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a025e3-7157-7912-b26f-d358a32f4df2" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_01a025e3-7157-788d-8096-0201317b6cff" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-7157-788d-8096-0201317b6cff_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a025e3-7157-788d-8096-0201317b6cff" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-7157-788d-8096-0201317b6cff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-7157-7147-bf56-3e18344311c5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a025e3-7157-788d-8096-0201317b6cff" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-7157-7147-bf56-3e18344311c5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_LEDBusinessMember_01a025e3-7157-75c0-91e4-872d591ade22" xlink:href="peng-20260828.xsd#peng_LEDBusinessMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-7157-7147-bf56-3e18344311c5" xlink:to="loc_peng_LEDBusinessMember_01a025e3-7157-75c0-91e4-872d591ade22" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StockRepurchaseProgramAuthorizedAmount1_01a025e3-7157-7285-b694-998e97153caf" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StockRepurchaseProgramAuthorizedAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-7886-a543-b1a67dbae7bb" xlink:to="loc_srt_StockRepurchaseProgramAuthorizedAmount1_01a025e3-7157-7285-b694-998e97153caf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares_01a025e3-7157-7436-8a9e-7016d02d41aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-7886-a543-b1a67dbae7bb" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodShares_01a025e3-7157-7436-8a9e-7016d02d41aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue_01a025e3-7157-76ac-947e-6ff3995f0cad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-7886-a543-b1a67dbae7bb" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue_01a025e3-7157-76ac-947e-6ff3995f0cad" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_01a025e3-7157-7c54-85b2-cf40c5d3e26e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-7886-a543-b1a67dbae7bb" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_01a025e3-7157-7c54-85b2-cf40c5d3e26e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OptionContractIndexedToEquitySettlementShareFairValue_01a025e3-7157-77fd-8269-10d4348fd8a4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OptionContractIndexedToEquitySettlementShareFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-7886-a543-b1a67dbae7bb" xlink:to="loc_us-gaap_OptionContractIndexedToEquitySettlementShareFairValue_01a025e3-7157-77fd-8269-10d4348fd8a4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_StockRepurchaseAgreementOwnershipRightsPercent_01a025e3-7157-7b95-8df4-c8fcf5ad6671" xlink:href="peng-20260828.xsd#peng_StockRepurchaseAgreementOwnershipRightsPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-7886-a543-b1a67dbae7bb" xlink:to="loc_peng_StockRepurchaseAgreementOwnershipRightsPercent_01a025e3-7157-7b95-8df4-c8fcf5ad6671" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_01a025e3-7157-7474-8e5c-f9875090b2f9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-7886-a543-b1a67dbae7bb" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_01a025e3-7157-7474-8e5c-f9875090b2f9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_01a025e3-7157-7034-80c5-c309df36cbb1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MinorityInterestOwnershipPercentageByParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-7886-a543-b1a67dbae7bb" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_01a025e3-7157-7034-80c5-c309df36cbb1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_01a025e3-7157-79b5-a75b-ea68fc149b1c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-7886-a543-b1a67dbae7bb" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_01a025e3-7157-79b5-a75b-ea68fc149b1c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_NumberOfBoardOfDirectors_01a025e3-7157-73a2-8fa4-dabc96159705" xlink:href="peng-20260828.xsd#peng_NumberOfBoardOfDirectors"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a025e3-7157-7886-a543-b1a67dbae7bb" xlink:to="loc_peng_NumberOfBoardOfDirectors_01a025e3-7157-73a2-8fa4-dabc96159705" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/EquityCappedCallsDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#EquityCappedCallsDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/EquityCappedCallsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-7157-7606-bf2b-630a937e273c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OptionIndexedToIssuersEquityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OptionIndexedToIssuersEquityTable_01a025e3-7157-78a1-a2ce-adaba9c0fefd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OptionIndexedToIssuersEquityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-7157-7606-bf2b-630a937e273c" xlink:to="loc_us-gaap_OptionIndexedToIssuersEquityTable_01a025e3-7157-78a1-a2ce-adaba9c0fefd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a025e3-7157-76da-86a7-7b8aa1950991" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityTable_01a025e3-7157-78a1-a2ce-adaba9c0fefd" xlink:to="loc_srt_RangeAxis_01a025e3-7157-76da-86a7-7b8aa1950991" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a025e3-7157-76da-86a7-7b8aa1950991_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a025e3-7157-76da-86a7-7b8aa1950991" xlink:to="loc_srt_RangeMember_01a025e3-7157-76da-86a7-7b8aa1950991_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a025e3-7157-7f52-986c-406e6f667870" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a025e3-7157-76da-86a7-7b8aa1950991" xlink:to="loc_srt_RangeMember_01a025e3-7157-7f52-986c-406e6f667870" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a025e3-7157-7dff-9c65-516dab76e263" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a025e3-7157-7f52-986c-406e6f667870" xlink:to="loc_srt_MaximumMember_01a025e3-7157-7dff-9c65-516dab76e263" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OptionIndexedToIssuersEquityTypeAxis_01a025e3-7157-72f0-9eda-c9d2d46a7e1a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OptionIndexedToIssuersEquityTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityTable_01a025e3-7157-78a1-a2ce-adaba9c0fefd" xlink:to="loc_us-gaap_OptionIndexedToIssuersEquityTypeAxis_01a025e3-7157-72f0-9eda-c9d2d46a7e1a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OptionIndexedToIssuersEquityTypeDomain_01a025e3-7157-72f0-9eda-c9d2d46a7e1a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OptionIndexedToIssuersEquityTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityTypeAxis_01a025e3-7157-72f0-9eda-c9d2d46a7e1a" xlink:to="loc_us-gaap_OptionIndexedToIssuersEquityTypeDomain_01a025e3-7157-72f0-9eda-c9d2d46a7e1a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OptionIndexedToIssuersEquityTypeDomain_01a025e3-7157-7154-9d17-d4b695c8a3bf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OptionIndexedToIssuersEquityTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityTypeAxis_01a025e3-7157-72f0-9eda-c9d2d46a7e1a" xlink:to="loc_us-gaap_OptionIndexedToIssuersEquityTypeDomain_01a025e3-7157-7154-9d17-d4b695c8a3bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_CappedCalls2029Member_01a025e3-7157-7afc-a81b-fc5906dddb08" xlink:href="peng-20260828.xsd#peng_CappedCalls2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityTypeDomain_01a025e3-7157-7154-9d17-d4b695c8a3bf" xlink:to="loc_peng_CappedCalls2029Member_01a025e3-7157-7afc-a81b-fc5906dddb08" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_CappedCalls2030Member_01a025e3-7157-78e6-8fe6-d1d4bfc84bac" xlink:href="peng-20260828.xsd#peng_CappedCalls2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityTypeDomain_01a025e3-7157-7154-9d17-d4b695c8a3bf" xlink:to="loc_peng_CappedCalls2030Member_01a025e3-7157-78e6-8fe6-d1d4bfc84bac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_CappedCalls2031Member_01a048bf-d067-78b0-b11b-b3e51680fbf2" xlink:href="peng-20260828.xsd#peng_CappedCalls2031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityTypeDomain_01a025e3-7157-7154-9d17-d4b695c8a3bf" xlink:to="loc_peng_CappedCalls2031Member_01a048bf-d067-78b0-b11b-b3e51680fbf2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OptionIndexedToIssuersEquityStrikePrice1_01a025e3-7157-7aa1-bbc5-ba0c2e6f3063" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OptionIndexedToIssuersEquityStrikePrice1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-7157-7606-bf2b-630a937e273c" xlink:to="loc_us-gaap_OptionIndexedToIssuersEquityStrikePrice1_01a025e3-7157-7aa1-bbc5-ba0c2e6f3063" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_OptionIndexedToIssuersEquityCapPrice_01a025e3-7157-7878-8aa4-1805cbb39ee4" xlink:href="peng-20260828.xsd#peng_OptionIndexedToIssuersEquityCapPrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-7157-7606-bf2b-630a937e273c" xlink:to="loc_peng_OptionIndexedToIssuersEquityCapPrice_01a025e3-7157-7878-8aa4-1805cbb39ee4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OptionIndexedToIssuersEquityShares_01a025e3-7157-7004-a834-0b9eba00df67" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OptionIndexedToIssuersEquityShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-7157-7606-bf2b-630a937e273c" xlink:to="loc_us-gaap_OptionIndexedToIssuersEquityShares_01a025e3-7157-7004-a834-0b9eba00df67" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OptionContractIndexedToEquitySettlementShareFairValue_01a025e3-7157-7924-a992-26023227ac71" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OptionContractIndexedToEquitySettlementShareFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OptionIndexedToIssuersEquityLineItems_01a025e3-7157-7606-bf2b-630a937e273c" xlink:to="loc_us-gaap_OptionContractIndexedToEquitySettlementShareFairValue_01a025e3-7157-7924-a992-26023227ac71" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/EquityScheduleofAccumulatedOtherComprehensiveIncomeDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#EquityScheduleofAccumulatedOtherComprehensiveIncomeDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/EquityScheduleofAccumulatedOtherComprehensiveIncomeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_01a025e3-7157-7624-9b1a-0ee22f70d712" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_01a025e3-7157-7ada-8cac-c106f51134e3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_01a025e3-7157-7624-9b1a-0ee22f70d712" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_01a025e3-7157-7ada-8cac-c106f51134e3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a025e3-7157-75eb-b191-859c50b2b3e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_01a025e3-7157-7ada-8cac-c106f51134e3" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a025e3-7157-75eb-b191-859c50b2b3e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a025e3-7157-75eb-b191-859c50b2b3e6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a025e3-7157-75eb-b191-859c50b2b3e6" xlink:to="loc_us-gaap_EquityComponentDomain_01a025e3-7157-75eb-b191-859c50b2b3e6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a025e3-7157-71e9-984d-3baf0177fd35" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a025e3-7157-75eb-b191-859c50b2b3e6" xlink:to="loc_us-gaap_EquityComponentDomain_01a025e3-7157-71e9-984d-3baf0177fd35" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a082a2-5398-7c6d-b12c-3f080cbbc1b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a025e3-7157-71e9-984d-3baf0177fd35" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a082a2-5398-7c6d-b12c-3f080cbbc1b4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_01a10fc4-079e-7a27-aa65-65240c028529" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a082a2-5398-7c6d-b12c-3f080cbbc1b4" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_01a10fc4-079e-7a27-aa65-65240c028529" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember_01a05bca-f6da-7065-b62a-45b5e8879372" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a082a2-5398-7c6d-b12c-3f080cbbc1b4" xlink:to="loc_us-gaap_AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember_01a05bca-f6da-7065-b62a-45b5e8879372" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a025e3-7157-7aa1-96ac-2e78dcecaa6a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_01a025e3-7157-7624-9b1a-0ee22f70d712" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a025e3-7157-7aa1-96ac-2e78dcecaa6a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a025e3-7157-70e1-85d0-9b4025cb12a1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a025e3-7157-7aa1-96ac-2e78dcecaa6a" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a025e3-7157-70e1-85d0-9b4025cb12a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_01a025e3-7157-7e1f-b799-b86208d09de1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a025e3-7157-7aa1-96ac-2e78dcecaa6a" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_01a025e3-7157-7e1f-b799-b86208d09de1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_01a025e3-7157-7dae-b74a-242852f5e3a2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a025e3-7157-7aa1-96ac-2e78dcecaa6a" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_01a025e3-7157-7dae-b74a-242852f5e3a2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a025e3-7157-7f42-baf3-f17e856f8a9c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/FairValueMeasurementsScheduleofFairValueMeasurementsofOtherAssetsandLiabilitiesDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#FairValueMeasurementsScheduleofFairValueMeasurementsofOtherAssetsandLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/FairValueMeasurementsScheduleofFairValueMeasurementsofOtherAssetsandLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_01a025e3-7158-71d4-936d-33e2ba6b299c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a025e3-7157-7691-ad36-a461136c8154" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_01a025e3-7158-71d4-936d-33e2ba6b299c" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a025e3-7157-7691-ad36-a461136c8154" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_01a025e3-7157-785d-84cf-151c7bdbfa4c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a025e3-7157-7691-ad36-a461136c8154" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_01a025e3-7157-785d-84cf-151c7bdbfa4c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a025e3-7157-785d-84cf-151c7bdbfa4c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_01a025e3-7157-785d-84cf-151c7bdbfa4c" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a025e3-7157-785d-84cf-151c7bdbfa4c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_01a025e3-7157-7b35-b139-ae8298d8e082" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_01a025e3-7157-785d-84cf-151c7bdbfa4c" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_01a025e3-7157-7b35-b139-ae8298d8e082" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a025e3-7157-71fe-8b00-634ff0148231" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_01a025e3-7157-7b35-b139-ae8298d8e082" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a025e3-7157-71fe-8b00-634ff0148231" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_01a025e3-7157-7647-94e1-d5cb41e49d15" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a025e3-7157-71fe-8b00-634ff0148231" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_01a025e3-7157-7647-94e1-d5cb41e49d15" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_01a025e3-7157-7929-abf4-425258d54aa6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a025e3-7157-71fe-8b00-634ff0148231" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_01a025e3-7157-7929-abf4-425258d54aa6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a025e3-7157-70dd-8ef7-83621324faf2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a025e3-7157-7691-ad36-a461136c8154" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a025e3-7157-70dd-8ef7-83621324faf2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a025e3-7157-70dd-8ef7-83621324faf2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a025e3-7157-70dd-8ef7-83621324faf2" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a025e3-7157-70dd-8ef7-83621324faf2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a025e3-7157-7493-aa88-264da4fffd95" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a025e3-7157-70dd-8ef7-83621324faf2" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a025e3-7157-7493-aa88-264da4fffd95" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_01a025e3-7157-7a5b-8c0b-9866ea15ced0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a025e3-7157-7493-aa88-264da4fffd95" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_01a025e3-7157-7a5b-8c0b-9866ea15ced0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-75ab-b740-88ba25cd1376" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a025e3-7157-7691-ad36-a461136c8154" xlink:to="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-75ab-b740-88ba25cd1376" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-75ab-b740-88ba25cd1376_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-75ab-b740-88ba25cd1376" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-75ab-b740-88ba25cd1376_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-73d9-a19a-84796c0bfa98" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a025e3-7157-75ab-b740-88ba25cd1376" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-73d9-a19a-84796c0bfa98" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SeniorNotesDueTwoThousandThirtyOneMember_01a048c3-5ea2-72ee-afd5-badef9f4d5a6" xlink:href="peng-20260828.xsd#peng_SeniorNotesDueTwoThousandThirtyOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-73d9-a19a-84796c0bfa98" xlink:to="loc_peng_SeniorNotesDueTwoThousandThirtyOneMember_01a048c3-5ea2-72ee-afd5-badef9f4d5a6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SeniorNotesDueTwoThousandThirtyMember_01a025e3-7157-7a92-9d0e-26fc59a4c778" xlink:href="peng-20260828.xsd#peng_SeniorNotesDueTwoThousandThirtyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-73d9-a19a-84796c0bfa98" xlink:to="loc_peng_SeniorNotesDueTwoThousandThirtyMember_01a025e3-7157-7a92-9d0e-26fc59a4c778" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TwoPercentConvertibleSeniorNotesDueTwoThousandTwentyNineMember_01a025e3-7157-77e1-a26a-2f883084de60" xlink:href="peng-20260828.xsd#peng_TwoPercentConvertibleSeniorNotesDueTwoThousandTwentyNineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-73d9-a19a-84796c0bfa98" xlink:to="loc_peng_TwoPercentConvertibleSeniorNotesDueTwoThousandTwentyNineMember_01a025e3-7157-77e1-a26a-2f883084de60" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandTwentySixMember_01a025e3-7157-755b-b303-b84685049903" xlink:href="peng-20260828.xsd#peng_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandTwentySixMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a025e3-7157-73d9-a19a-84796c0bfa98" xlink:to="loc_peng_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandTwentySixMember_01a025e3-7157-755b-b303-b84685049903" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsAbstract_01a025e3-7158-795b-a1d1-67ac8f531bea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a025e3-7158-71d4-936d-33e2ba6b299c" xlink:to="loc_us-gaap_DerivativeAssetsAbstract_01a025e3-7158-795b-a1d1-67ac8f531bea" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_01a025e3-7158-795e-b8df-0636278a075b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeAssetsAbstract_01a025e3-7158-795b-a1d1-67ac8f531bea" xlink:to="loc_us-gaap_DerivativeAssets_01a025e3-7158-795e-b8df-0636278a075b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_01a025e3-7158-7d3d-912b-1d898927da64" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeAssets_01a025e3-7158-795e-b8df-0636278a075b" xlink:to="loc_us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_01a025e3-7158-7d3d-912b-1d898927da64" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesAbstract_01a025e3-7158-7dfd-8167-fe74248b2a7a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a025e3-7158-71d4-936d-33e2ba6b299c" xlink:to="loc_us-gaap_DerivativeLiabilitiesAbstract_01a025e3-7158-7dfd-8167-fe74248b2a7a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFairValue_01a025e3-7158-7345-90fb-28c6d56a3a9d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLiabilitiesAbstract_01a025e3-7158-7dfd-8167-fe74248b2a7a" xlink:to="loc_us-gaap_DebtInstrumentFairValue_01a025e3-7158-7345-90fb-28c6d56a3a9d" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/FairValueMeasurementsAdditionalInformationDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#FairValueMeasurementsAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/FairValueMeasurementsAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_01a025e3-7158-71c5-a36c-aca3231e051d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a025e3-7158-717e-a025-a9415df6d8dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_01a025e3-7158-71c5-a36c-aca3231e051d" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a025e3-7158-717e-a025-a9415df6d8dc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_01a025e3-7158-7770-8fc7-6824fd52a4fe" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a025e3-7158-717e-a025-a9415df6d8dc" xlink:to="loc_srt_OwnershipAxis_01a025e3-7158-7770-8fc7-6824fd52a4fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_01a025e3-7158-7770-8fc7-6824fd52a4fe_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_01a025e3-7158-7770-8fc7-6824fd52a4fe" xlink:to="loc_srt_OwnershipDomain_01a025e3-7158-7770-8fc7-6824fd52a4fe_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_01a025e3-7158-71d3-a1c3-95277b1b8897" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_01a025e3-7158-7770-8fc7-6824fd52a4fe" xlink:to="loc_srt_OwnershipDomain_01a025e3-7158-71d3-a1c3-95277b1b8897" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_SMARTBrazilMember_01a025e3-7158-74db-ab12-ff2590c83548" xlink:href="peng-20260828.xsd#peng_SMARTBrazilMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_01a025e3-7158-71d3-a1c3-95277b1b8897" xlink:to="loc_peng_SMARTBrazilMember_01a025e3-7158-74db-ab12-ff2590c83548" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_01a025e3-7158-7572-b71f-e4ad084e663f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a025e3-7158-717e-a025-a9415df6d8dc" xlink:to="loc_dei_LegalEntityAxis_01a025e3-7158-7572-b71f-e4ad084e663f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a025e3-7158-7572-b71f-e4ad084e663f_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_01a025e3-7158-7572-b71f-e4ad084e663f" xlink:to="loc_dei_EntityDomain_01a025e3-7158-7572-b71f-e4ad084e663f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a025e3-7158-77fb-9c9c-238a576e583b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_01a025e3-7158-7572-b71f-e4ad084e663f" xlink:to="loc_dei_EntityDomain_01a025e3-7158-77fb-9c9c-238a576e583b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_LexarEuropeBVMember_01a025e3-7158-76bb-b352-8348127e87d3" xlink:href="peng-20260828.xsd#peng_LexarEuropeBVMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_01a025e3-7158-77fb-9c9c-238a576e583b" xlink:to="loc_peng_LexarEuropeBVMember_01a025e3-7158-76bb-b352-8348127e87d3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_StockRepurchaseAgreementOwnershipRightsPercent_01a025e3-7158-7f44-8ca2-fe1548c4b3f4" xlink:href="peng-20260828.xsd#peng_StockRepurchaseAgreementOwnershipRightsPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_01a025e3-7158-71c5-a36c-aca3231e051d" xlink:to="loc_peng_StockRepurchaseAgreementOwnershipRightsPercent_01a025e3-7158-7f44-8ca2-fe1548c4b3f4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplierFinanceProgramObligationCurrent_01a12f68-d640-7476-a72b-8eb3cb1a72c6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SupplierFinanceProgramObligationCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_01a025e3-7158-71c5-a36c-aca3231e051d" xlink:to="loc_us-gaap_SupplierFinanceProgramObligationCurrent_01a12f68-d640-7476-a72b-8eb3cb1a72c6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplierFinanceProgramObligationCurrentStatementOfFinancialPositionExtensibleEnumeration_01a12f75-3a29-7bc4-a26d-74a6bd92778e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SupplierFinanceProgramObligationCurrentStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_01a025e3-7158-71c5-a36c-aca3231e051d" xlink:to="loc_us-gaap_SupplierFinanceProgramObligationCurrentStatementOfFinancialPositionExtensibleEnumeration_01a12f75-3a29-7bc4-a26d-74a6bd92778e" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/EquityPlansAdditionalInformationDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#EquityPlansAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/EquityPlansAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-708b-bb2f-fc0ac45b7005" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a025e3-7158-7ca6-a4dd-ea014b533beb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-708b-bb2f-fc0ac45b7005" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a025e3-7158-7ca6-a4dd-ea014b533beb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_01a025e3-7158-7377-925d-b34cb42d0d65" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a025e3-7158-7ca6-a4dd-ea014b533beb" xlink:to="loc_us-gaap_PlanNameAxis_01a025e3-7158-7377-925d-b34cb42d0d65" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_01a025e3-7158-7377-925d-b34cb42d0d65_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_01a025e3-7158-7377-925d-b34cb42d0d65" xlink:to="loc_us-gaap_PlanNameDomain_01a025e3-7158-7377-925d-b34cb42d0d65_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_01a025e3-7158-7637-a215-27e2d4e7062f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_01a025e3-7158-7377-925d-b34cb42d0d65" xlink:to="loc_us-gaap_PlanNameDomain_01a025e3-7158-7637-a215-27e2d4e7062f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TwoThousandAndTwentyOneInducementPlanMember_01a025e3-7158-7661-b8fb-529ffb7006fc" xlink:href="peng-20260828.xsd#peng_TwoThousandAndTwentyOneInducementPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_01a025e3-7158-7637-a215-27e2d4e7062f" xlink:to="loc_peng_TwoThousandAndTwentyOneInducementPlanMember_01a025e3-7158-7661-b8fb-529ffb7006fc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TwoThousandSeventeenShareIncentivePlanSGHPlanMember_01a025e3-7158-7d8f-bb63-84f7baafb850" xlink:href="peng-20260828.xsd#peng_TwoThousandSeventeenShareIncentivePlanSGHPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_01a025e3-7158-7637-a215-27e2d4e7062f" xlink:to="loc_peng_TwoThousandSeventeenShareIncentivePlanSGHPlanMember_01a025e3-7158-7d8f-bb63-84f7baafb850" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_01a025e3-7158-78be-8394-f55e98447203" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a025e3-7158-7ca6-a4dd-ea014b533beb" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_01a025e3-7158-78be-8394-f55e98447203" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a025e3-7158-78be-8394-f55e98447203_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_01a025e3-7158-78be-8394-f55e98447203" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a025e3-7158-78be-8394-f55e98447203_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a025e3-7158-745c-9d19-3874905a6a97" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_01a025e3-7158-78be-8394-f55e98447203" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a025e3-7158-745c-9d19-3874905a6a97" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockMember_01a025e3-7158-70f7-a165-50b352df887b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a025e3-7158-745c-9d19-3874905a6a97" xlink:to="loc_us-gaap_EmployeeStockMember_01a025e3-7158-70f7-a165-50b352df887b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_01a025e3-7158-788d-941b-772d3beb1f1b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a025e3-7158-7ca6-a4dd-ea014b533beb" xlink:to="loc_us-gaap_AwardTypeAxis_01a025e3-7158-788d-941b-772d3beb1f1b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a025e3-7158-788d-941b-772d3beb1f1b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_01a025e3-7158-788d-941b-772d3beb1f1b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a025e3-7158-788d-941b-772d3beb1f1b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a025e3-7158-7e89-86a2-7a9e8b7348f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_01a025e3-7158-788d-941b-772d3beb1f1b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a025e3-7158-7e89-86a2-7a9e8b7348f2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_01a025e3-7158-7781-93fb-959a03073fb5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeStockOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a025e3-7158-7e89-86a2-7a9e8b7348f2" xlink:to="loc_us-gaap_EmployeeStockOptionMember_01a025e3-7158-7781-93fb-959a03073fb5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_01a025e3-7158-7085-951a-4c89c2c90c1c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a025e3-7158-7e89-86a2-7a9e8b7348f2" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_01a025e3-7158-7085-951a-4c89c2c90c1c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_RestrictedStockAwardsAndRestrictedStockUnitsMember_01a025e3-7158-73dc-a5c5-6e876a916c01" xlink:href="peng-20260828.xsd#peng_RestrictedStockAwardsAndRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a025e3-7158-7e89-86a2-7a9e8b7348f2" xlink:to="loc_peng_RestrictedStockAwardsAndRestrictedStockUnitsMember_01a025e3-7158-73dc-a5c5-6e876a916c01" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_MarketBasedRestrictedShareAwardMember_01a025e3-7158-788d-b11f-b8e20e2d0569" xlink:href="peng-20260828.xsd#peng_MarketBasedRestrictedShareAwardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a025e3-7158-7e89-86a2-7a9e8b7348f2" xlink:to="loc_peng_MarketBasedRestrictedShareAwardMember_01a025e3-7158-788d-b11f-b8e20e2d0569" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a025e3-7158-7fcf-ba81-f7b212359940" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a025e3-7158-7ca6-a4dd-ea014b533beb" xlink:to="loc_srt_RangeAxis_01a025e3-7158-7fcf-ba81-f7b212359940" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a025e3-7158-7fcf-ba81-f7b212359940_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a025e3-7158-7fcf-ba81-f7b212359940" xlink:to="loc_srt_RangeMember_01a025e3-7158-7fcf-ba81-f7b212359940_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a025e3-7158-7384-ba73-1947ef75c96f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a025e3-7158-7fcf-ba81-f7b212359940" xlink:to="loc_srt_RangeMember_01a025e3-7158-7384-ba73-1947ef75c96f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a025e3-7158-7a5d-9f91-c0166446e52e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a025e3-7158-7384-ba73-1947ef75c96f" xlink:to="loc_srt_MinimumMember_01a025e3-7158-7a5d-9f91-c0166446e52e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a025e3-7158-71c4-960b-842b4959993e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a025e3-7158-7384-ba73-1947ef75c96f" xlink:to="loc_srt_MaximumMember_01a025e3-7158-71c4-960b-842b4959993e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_01a025e3-7158-7644-a54d-0ce1f17a36e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a025e3-7158-7ca6-a4dd-ea014b533beb" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_01a025e3-7158-7644-a54d-0ce1f17a36e9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-7158-7644-a54d-0ce1f17a36e9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a025e3-7158-7644-a54d-0ce1f17a36e9" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-7158-7644-a54d-0ce1f17a36e9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-7158-7ebe-a9fa-e7375f714e56" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a025e3-7158-7644-a54d-0ce1f17a36e9" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-7158-7ebe-a9fa-e7375f714e56" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_StratusTechnologiesMember_01a025e3-7158-72d3-99f1-ab6fcc2da877" xlink:href="peng-20260828.xsd#peng_StratusTechnologiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-7158-7ebe-a9fa-e7375f714e56" xlink:to="loc_peng_StratusTechnologiesMember_01a025e3-7158-72d3-99f1-ab6fcc2da877" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiabilityCurrent_01a025e3-7158-7f03-9da9-7ae7114ae1d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationContingentConsiderationLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-708b-bb2f-fc0ac45b7005" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiabilityCurrent_01a025e3-7158-7f03-9da9-7ae7114ae1d1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_01a025e3-7158-7aa9-9b83-693acfd45c4d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockCapitalSharesReservedForFutureIssuance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-708b-bb2f-fc0ac45b7005" xlink:to="loc_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_01a025e3-7158-7aa9-9b83-693acfd45c4d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_PercentageOfMaximumNumberOfOrdinarySharesThroughPayrollDeductions_01a025e3-7158-76e3-b0ce-1c62c4c05ad3" xlink:href="peng-20260828.xsd#peng_PercentageOfMaximumNumberOfOrdinarySharesThroughPayrollDeductions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-708b-bb2f-fc0ac45b7005" xlink:to="loc_peng_PercentageOfMaximumNumberOfOrdinarySharesThroughPayrollDeductions_01a025e3-7158-76e3-b0ce-1c62c4c05ad3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_01a025e3-7158-7da4-bb8c-583b25e953f1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-708b-bb2f-fc0ac45b7005" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_01a025e3-7158-7da4-bb8c-583b25e953f1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_01a025e3-7158-7c0a-baf7-96a72a57bd66" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-708b-bb2f-fc0ac45b7005" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_01a025e3-7158-7c0a-baf7-96a72a57bd66" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1_01a025e3-7158-7203-acf9-23176040962a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-708b-bb2f-fc0ac45b7005" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1_01a025e3-7158-7203-acf9-23176040962a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_01a025e3-7158-7c32-8857-b03421ccc462" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-708b-bb2f-fc0ac45b7005" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_01a025e3-7158-7c32-8857-b03421ccc462" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_01a025e3-7158-7b44-8622-5f753b14df20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-708b-bb2f-fc0ac45b7005" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_01a025e3-7158-7b44-8622-5f753b14df20" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_01a1362b-7e46-7e4c-91cc-89e3e9b41f0e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-708b-bb2f-fc0ac45b7005" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_01a1362b-7e46-7e4c-91cc-89e3e9b41f0e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_01a025e3-7158-771e-aff6-73724699ec1d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-708b-bb2f-fc0ac45b7005" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_01a025e3-7158-771e-aff6-73724699ec1d" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_01a025e3-7158-799b-b395-55723f6b14f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-708b-bb2f-fc0ac45b7005" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_01a025e3-7158-799b-b395-55723f6b14f2" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_01a025e3-7158-7912-bdca-0171532f1a2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-708b-bb2f-fc0ac45b7005" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_01a025e3-7158-7912-bdca-0171532f1a2e" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_ShareBasedCompensationFairMarketValuePercentageOfOrdinaryShare_01a025e3-7158-7e7c-bc0b-a31e1eea538d" xlink:href="peng-20260828.xsd#peng_ShareBasedCompensationFairMarketValuePercentageOfOrdinaryShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-708b-bb2f-fc0ac45b7005" xlink:to="loc_peng_ShareBasedCompensationFairMarketValuePercentageOfOrdinaryShare_01a025e3-7158-7e7c-bc0b-a31e1eea538d" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_01a025e3-7158-7112-93da-e0051a818b41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-708b-bb2f-fc0ac45b7005" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_01a025e3-7158-7112-93da-e0051a818b41" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_01a025e3-7158-7b73-a320-40c0ec95dbc8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-708b-bb2f-fc0ac45b7005" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_01a025e3-7158-7b73-a320-40c0ec95dbc8" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_01a025e3-7158-721a-8741-9d986eed535c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-708b-bb2f-fc0ac45b7005" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_01a025e3-7158-721a-8741-9d986eed535c" xlink:type="arc" order="15"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/EquityPlansScheduleofOutstandingRestrictedShareAwardsandRestrictedShareUnitsAwardsDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#EquityPlansScheduleofOutstandingRestrictedShareAwardsandRestrictedShareUnitsAwardsDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/EquityPlansScheduleofOutstandingRestrictedShareAwardsandRestrictedShareUnitsAwardsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-7372-b07c-d147bc6a0191" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a025e3-7158-7b53-b279-34b5cb84732b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-7372-b07c-d147bc6a0191" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a025e3-7158-7b53-b279-34b5cb84732b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_01a025e3-7158-7634-a8d3-d7ee58f161f8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a025e3-7158-7b53-b279-34b5cb84732b" xlink:to="loc_us-gaap_AwardTypeAxis_01a025e3-7158-7634-a8d3-d7ee58f161f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a025e3-7158-7634-a8d3-d7ee58f161f8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_01a025e3-7158-7634-a8d3-d7ee58f161f8" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a025e3-7158-7634-a8d3-d7ee58f161f8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a025e3-7158-7eda-b7ef-79e7a7af3bac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_01a025e3-7158-7634-a8d3-d7ee58f161f8" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a025e3-7158-7eda-b7ef-79e7a7af3bac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_RestrictedStockAwardsAndRestrictedStockUnitsMember_01a025e3-7158-73d1-9e54-6d6ff80824f6" xlink:href="peng-20260828.xsd#peng_RestrictedStockAwardsAndRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a025e3-7158-7eda-b7ef-79e7a7af3bac" xlink:to="loc_peng_RestrictedStockAwardsAndRestrictedStockUnitsMember_01a025e3-7158-73d1-9e54-6d6ff80824f6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_01a025e3-7158-7e82-b94c-7d8f3bac5726" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-7372-b07c-d147bc6a0191" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_01a025e3-7158-7e82-b94c-7d8f3bac5726" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a025e3-7158-7f46-88d8-3ef58d0611b0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_01a025e3-7158-7e82-b94c-7d8f3bac5726" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a025e3-7158-7f46-88d8-3ef58d0611b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a025e3-7158-70d9-a007-c1585ff9fc0c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_01a025e3-7158-7e82-b94c-7d8f3bac5726" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a025e3-7158-70d9-a007-c1585ff9fc0c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_01a025e3-7158-7cde-83f8-0ffedbf20bf5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_01a025e3-7158-7e82-b94c-7d8f3bac5726" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_01a025e3-7158-7cde-83f8-0ffedbf20bf5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_01a025e3-7158-7a95-89f9-1d57ae1f0afb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_01a025e3-7158-7e82-b94c-7d8f3bac5726" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_01a025e3-7158-7a95-89f9-1d57ae1f0afb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a025e3-7158-76a4-9e02-77f63d69c4ea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a025e3-7158-7b0e-8ff3-abdf73282764" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-7372-b07c-d147bc6a0191" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a025e3-7158-7b0e-8ff3-abdf73282764" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a025e3-7158-73dc-918d-2057d22818d8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a025e3-7158-7b0e-8ff3-abdf73282764" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a025e3-7158-73dc-918d-2057d22818d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_01a025e3-7158-7e2e-9fe4-c411bd4ed7ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a025e3-7158-7b0e-8ff3-abdf73282764" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_01a025e3-7158-7e2e-9fe4-c411bd4ed7ae" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_01a025e3-7158-7ada-9f11-3b503cc200c1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a025e3-7158-7b0e-8ff3-abdf73282764" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_01a025e3-7158-7ada-9f11-3b503cc200c1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_01a025e3-7158-7984-a1ba-4b20997eec8f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a025e3-7158-7b0e-8ff3-abdf73282764" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_01a025e3-7158-7984-a1ba-4b20997eec8f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a025e3-7158-7afc-add2-07fb2a6b367f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_01a025e3-7158-7d6f-b2f9-e87986387c7b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-7372-b07c-d147bc6a0191" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_01a025e3-7158-7d6f-b2f9-e87986387c7b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding_01a025e3-7158-7358-84ee-a6f16a939034" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_01a025e3-7158-7d6f-b2f9-e87986387c7b" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding_01a025e3-7158-7358-84ee-a6f16a939034" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/EquityPlansSummaryofAggregateRestrictedAwardActivityandAssumptionsDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#EquityPlansSummaryofAggregateRestrictedAwardActivityandAssumptionsDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/EquityPlansSummaryofAggregateRestrictedAwardActivityandAssumptionsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-74d3-aa99-df63606e668c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a025e3-7158-7968-9c02-e4fcfbf9ef39" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-74d3-aa99-df63606e668c" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a025e3-7158-7968-9c02-e4fcfbf9ef39" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_01a025e3-7158-728f-8b58-eb81ba4fb6bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a025e3-7158-7968-9c02-e4fcfbf9ef39" xlink:to="loc_us-gaap_AwardTypeAxis_01a025e3-7158-728f-8b58-eb81ba4fb6bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a025e3-7158-728f-8b58-eb81ba4fb6bc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_01a025e3-7158-728f-8b58-eb81ba4fb6bc" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a025e3-7158-728f-8b58-eb81ba4fb6bc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a025e3-7158-72b0-8ac3-4fe99344fe99" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_01a025e3-7158-728f-8b58-eb81ba4fb6bc" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a025e3-7158-72b0-8ac3-4fe99344fe99" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_RestrictedStockAwardsAndRestrictedStockUnitsMember_01a025e3-7158-7b88-8b89-995f6c4a97e3" xlink:href="peng-20260828.xsd#peng_RestrictedStockAwardsAndRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a025e3-7158-72b0-8ac3-4fe99344fe99" xlink:to="loc_peng_RestrictedStockAwardsAndRestrictedStockUnitsMember_01a025e3-7158-7b88-8b89-995f6c4a97e3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodExcludingOverachievementOfAwards_01a13632-1c4a-7f7d-8180-55a36be3bfc9" xlink:href="peng-20260828.xsd#peng_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodExcludingOverachievementOfAwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-74d3-aa99-df63606e668c" xlink:to="loc_peng_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodExcludingOverachievementOfAwards_01a13632-1c4a-7f7d-8180-55a36be3bfc9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a025e3-7158-7e14-a772-7cf885d950ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-74d3-aa99-df63606e668c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a025e3-7158-7e14-a772-7cf885d950ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_01a025e3-7158-7ab7-bf06-1e71d9498049" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-74d3-aa99-df63606e668c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_01a025e3-7158-7ab7-bf06-1e71d9498049" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested_01a025e3-7158-7f5a-9710-7fe8acbd0954" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-74d3-aa99-df63606e668c" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested_01a025e3-7158-7f5a-9710-7fe8acbd0954" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/EquityPlansSummaryofSharebasedCompensationExpenseDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#EquityPlansSummaryofSharebasedCompensationExpenseDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/EquityPlansSummaryofSharebasedCompensationExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-7120-902b-12455c987e0c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a025e3-7158-7b64-a2fd-f010c67474a5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-7120-902b-12455c987e0c" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a025e3-7158-7b64-a2fd-f010c67474a5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a025e3-7158-7ec7-8aa3-7d93fa333034" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfIncomeLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a025e3-7158-7b64-a2fd-f010c67474a5" xlink:to="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a025e3-7158-7ec7-8aa3-7d93fa333034" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a025e3-7158-70b7-893b-a907cc2ca795" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-7120-902b-12455c987e0c" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a025e3-7158-70b7-893b-a907cc2ca795" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/EquityPlansSummaryofSharebasedCompensationExpenseDetails_1" xlink:type="simple" xlink:href="peng-20260828.xsd#EquityPlansSummaryofSharebasedCompensationExpenseDetails_1"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/EquityPlansSummaryofSharebasedCompensationExpenseDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-7120-902b-12455c987e0c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a025e3-7158-7b64-a2fd-f010c67474a5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-7120-902b-12455c987e0c" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a025e3-7158-7b64-a2fd-f010c67474a5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a025e3-7158-70b7-893b-a907cc2ca795" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a025e3-7158-7120-902b-12455c987e0c" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a025e3-7158-70b7-893b-a907cc2ca795" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/RevenueandCustomerContractBalancesAdditionalinformationDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#RevenueandCustomerContractBalancesAdditionalinformationDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/RevenueandCustomerContractBalancesAdditionalinformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_01a025e3-7158-758f-9a59-fb7c3767ad05" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_01a025e3-7158-7b99-96fc-e1f7522e888c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a025e3-7158-758f-9a59-fb7c3767ad05" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_01a025e3-7158-7b99-96fc-e1f7522e888c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_01a025e3-7158-7e76-97dc-37dcc6863d45" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_01a025e3-7158-7b99-96fc-e1f7522e888c" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_01a025e3-7158-7e76-97dc-37dcc6863d45" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_01a025e3-7158-7637-85d1-1fed763de7fb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a025e3-7158-758f-9a59-fb7c3767ad05" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_01a025e3-7158-7637-85d1-1fed763de7fb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_01a025e3-7158-7bd1-8e28-232c40c65888" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a025e3-7158-758f-9a59-fb7c3767ad05" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_01a025e3-7158-7bd1-8e28-232c40c65888" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_01a025e3-7158-7671-a315-67e46bd85c08" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a025e3-7158-758f-9a59-fb7c3767ad05" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_01a025e3-7158-7671-a315-67e46bd85c08" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRefundLiabilityCurrent_01a025e3-7158-7599-be80-8803be836ea9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CustomerRefundLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a025e3-7158-758f-9a59-fb7c3767ad05" xlink:to="loc_us-gaap_CustomerRefundLiabilityCurrent_01a025e3-7158-7599-be80-8803be836ea9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_ContractWithCustomerLiabilityRevenueRecognizedCustomerAdvances_01a025e3-7158-7d23-a8cd-47251009d08d" xlink:href="peng-20260828.xsd#peng_ContractWithCustomerLiabilityRevenueRecognizedCustomerAdvances"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a025e3-7158-758f-9a59-fb7c3767ad05" xlink:to="loc_peng_ContractWithCustomerLiabilityRevenueRecognizedCustomerAdvances_01a025e3-7158-7d23-a8cd-47251009d08d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerRefundLiability_01a025e3-7158-7f43-b819-d31dfe42fe29" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerRefundLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a025e3-7158-758f-9a59-fb7c3767ad05" xlink:to="loc_us-gaap_ContractWithCustomerRefundLiability_01a025e3-7158-7f43-b819-d31dfe42fe29" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/RevenueandCustomerContractBalancesAdditionalinformationDetails_1" xlink:type="simple" xlink:href="peng-20260828.xsd#RevenueandCustomerContractBalancesAdditionalinformationDetails_1"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/RevenueandCustomerContractBalancesAdditionalinformationDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_01a025e3-7158-758f-9a59-fb7c3767ad05" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_01a025e3-7158-7b99-96fc-e1f7522e888c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a025e3-7158-758f-9a59-fb7c3767ad05" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_01a025e3-7158-7b99-96fc-e1f7522e888c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_01a025e3-7158-7637-85d1-1fed763de7fb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a025e3-7158-758f-9a59-fb7c3767ad05" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_01a025e3-7158-7637-85d1-1fed763de7fb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_01a025e3-7158-7bd1-8e28-232c40c65888" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a025e3-7158-758f-9a59-fb7c3767ad05" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_01a025e3-7158-7bd1-8e28-232c40c65888" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_01a025e3-7158-7671-a315-67e46bd85c08" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a025e3-7158-758f-9a59-fb7c3767ad05" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_01a025e3-7158-7671-a315-67e46bd85c08" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRefundLiabilityCurrent_01a025e3-7158-7599-be80-8803be836ea9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CustomerRefundLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a025e3-7158-758f-9a59-fb7c3767ad05" xlink:to="loc_us-gaap_CustomerRefundLiabilityCurrent_01a025e3-7158-7599-be80-8803be836ea9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_ContractWithCustomerLiabilityRevenueRecognizedCustomerAdvances_01a025e3-7158-7d23-a8cd-47251009d08d" xlink:href="peng-20260828.xsd#peng_ContractWithCustomerLiabilityRevenueRecognizedCustomerAdvances"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a025e3-7158-758f-9a59-fb7c3767ad05" xlink:to="loc_peng_ContractWithCustomerLiabilityRevenueRecognizedCustomerAdvances_01a025e3-7158-7d23-a8cd-47251009d08d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerRefundLiability_01a025e3-7158-7f43-b819-d31dfe42fe29" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerRefundLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a025e3-7158-758f-9a59-fb7c3767ad05" xlink:to="loc_us-gaap_ContractWithCustomerRefundLiability_01a025e3-7158-7f43-b819-d31dfe42fe29" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/IncomeTaxesIncomeTaxPaidDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#IncomeTaxesIncomeTaxPaidDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/IncomeTaxesIncomeTaxPaidDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionLineItems_01a048d9-4701-7887-a6f1-4e7cdd7d45d8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxPaidByIndividualJurisdictionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionTable_01a048d9-4701-73cf-9877-122e0d2b001e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxPaidByIndividualJurisdictionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionLineItems_01a048d9-4701-7887-a6f1-4e7cdd7d45d8" xlink:to="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionTable_01a048d9-4701-73cf-9877-122e0d2b001e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_01a048d9-4701-7cdf-9ae9-81dd179772d0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionTable_01a048d9-4701-73cf-9877-122e0d2b001e" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_01a048d9-4701-7cdf-9ae9-81dd179772d0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_01a048d9-4701-7cdf-9ae9-81dd179772d0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_01a048d9-4701-7cdf-9ae9-81dd179772d0" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_01a048d9-4701-7cdf-9ae9-81dd179772d0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_01a048d9-4701-77f4-97eb-984b5bb19c26" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_01a048d9-4701-7cdf-9ae9-81dd179772d0" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_01a048d9-4701-77f4-97eb-984b5bb19c26" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCountryMember_01a048dc-79a2-72e0-a47c-1ad5e57e74ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignCountryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_01a048d9-4701-77f4-97eb-984b5bb19c26" xlink:to="loc_us-gaap_ForeignCountryMember_01a048dc-79a2-72e0-a47c-1ad5e57e74ef" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_MY_01a0cda4-4379-7578-95e9-5771d71aa143" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_MY"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ForeignCountryMember_01a048dc-79a2-72e0-a47c-1ad5e57e74ef" xlink:to="loc_country_MY_01a0cda4-4379-7578-95e9-5771d71aa143" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_LU_01a0cda3-a089-7dc7-8841-9cfccc39e526" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_LU"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ForeignCountryMember_01a048dc-79a2-72e0-a47c-1ad5e57e74ef" xlink:to="loc_country_LU_01a0cda3-a089-7dc7-8841-9cfccc39e526" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_HK_01a0cda5-4e89-73e2-8d5c-da35a9993540" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_HK"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ForeignCountryMember_01a048dc-79a2-72e0-a47c-1ad5e57e74ef" xlink:to="loc_country_HK_01a0cda5-4e89-73e2-8d5c-da35a9993540" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignTaxJurisdictionOtherMember_01a048d9-4701-7361-a0c1-c1d683a21844" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignTaxJurisdictionOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ForeignCountryMember_01a048dc-79a2-72e0-a47c-1ad5e57e74ef" xlink:to="loc_us-gaap_ForeignTaxJurisdictionOtherMember_01a048d9-4701-7361-a0c1-c1d683a21844" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxPaidFederalAfterRefundReceived_01a048da-8407-74c6-92b1-462d200ae52f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxPaidFederalAfterRefundReceived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionLineItems_01a048d9-4701-7887-a6f1-4e7cdd7d45d8" xlink:to="loc_us-gaap_IncomeTaxPaidFederalAfterRefundReceived_01a048da-8407-74c6-92b1-462d200ae52f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxPaidStateAndLocalAfterRefundReceived_01a048d9-4701-7f90-96df-db23c9ae992f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxPaidStateAndLocalAfterRefundReceived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionLineItems_01a048d9-4701-7887-a6f1-4e7cdd7d45d8" xlink:to="loc_us-gaap_IncomeTaxPaidStateAndLocalAfterRefundReceived_01a048d9-4701-7f90-96df-db23c9ae992f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxPaidForeignAfterRefundReceived_01a048d9-4701-79cd-a142-56cb80d7bc58" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxPaidForeignAfterRefundReceived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionLineItems_01a048d9-4701-7887-a6f1-4e7cdd7d45d8" xlink:to="loc_us-gaap_IncomeTaxPaidForeignAfterRefundReceived_01a048d9-4701-79cd-a142-56cb80d7bc58" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesPaidNet_01a048d9-4701-7829-b0f9-c5fcb5a4daff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxesPaidNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionLineItems_01a048d9-4701-7887-a6f1-4e7cdd7d45d8" xlink:to="loc_us-gaap_IncomeTaxesPaidNet_01a048d9-4701-7829-b0f9-c5fcb5a4daff" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/IncomeTaxesAdditionalInformationDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#IncomeTaxesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/IncomeTaxesAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_peng_IncomeTaxesLineItems_01a025e3-7158-78c9-94ce-3dbbfab40d49" xlink:href="peng-20260828.xsd#peng_IncomeTaxesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_IncomeTaxesTable_01a025e3-7158-7170-950d-781a451d8e48" xlink:href="peng-20260828.xsd#peng_IncomeTaxesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_peng_IncomeTaxesLineItems_01a025e3-7158-78c9-94ce-3dbbfab40d49" xlink:to="loc_peng_IncomeTaxesTable_01a025e3-7158-7170-950d-781a451d8e48" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_01a025e3-7158-761c-b87f-4286fb117a0b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_peng_IncomeTaxesTable_01a025e3-7158-7170-950d-781a451d8e48" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_01a025e3-7158-761c-b87f-4286fb117a0b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_01a025e3-7158-761c-b87f-4286fb117a0b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_01a025e3-7158-761c-b87f-4286fb117a0b" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_01a025e3-7158-761c-b87f-4286fb117a0b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_01a025e3-7158-760e-b930-a79fe6a9b664" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_01a025e3-7158-761c-b87f-4286fb117a0b" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_01a025e3-7158-760e-b930-a79fe6a9b664" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StateAndLocalJurisdictionMember_01a025e3-7158-766d-a243-173450d97259" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StateAndLocalJurisdictionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_01a025e3-7158-760e-b930-a79fe6a9b664" xlink:to="loc_us-gaap_StateAndLocalJurisdictionMember_01a025e3-7158-766d-a243-173450d97259" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCountryMember_01a025e3-7158-7f3c-a8fa-7a0d8448238a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignCountryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_01a025e3-7158-760e-b930-a79fe6a9b664" xlink:to="loc_us-gaap_ForeignCountryMember_01a025e3-7158-7f3c-a8fa-7a0d8448238a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_HK_01a0f1e9-473e-713e-a28a-2559eab70351" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_HK"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ForeignCountryMember_01a025e3-7158-7f3c-a8fa-7a0d8448238a" xlink:to="loc_country_HK_01a0f1e9-473e-713e-a28a-2559eab70351" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_IE_01a0f1e9-6a33-7836-a3fb-685f6e7453bb" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_IE"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ForeignCountryMember_01a025e3-7158-7f3c-a8fa-7a0d8448238a" xlink:to="loc_country_IE_01a0f1e9-6a33-7836-a3fb-685f6e7453bb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_LU_01a0f1e9-959b-759a-9a05-295c4e74e849" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_LU"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ForeignCountryMember_01a025e3-7158-7f3c-a8fa-7a0d8448238a" xlink:to="loc_country_LU_01a0f1e9-959b-759a-9a05-295c4e74e849" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticCountryMember_01a025e3-7158-707d-8f3d-6a94cd0e527f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DomesticCountryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_01a025e3-7158-760e-b930-a79fe6a9b664" xlink:to="loc_us-gaap_DomesticCountryMember_01a025e3-7158-707d-8f3d-6a94cd0e527f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_01a025e3-7158-74c2-ac73-f378ff51fd17" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_peng_IncomeTaxesTable_01a025e3-7158-7170-950d-781a451d8e48" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_01a025e3-7158-74c2-ac73-f378ff51fd17" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-7158-74c2-ac73-f378ff51fd17_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a025e3-7158-74c2-ac73-f378ff51fd17" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-7158-74c2-ac73-f378ff51fd17_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-7158-759c-b21b-8be3df19aeea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a025e3-7158-74c2-ac73-f378ff51fd17" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-7158-759c-b21b-8be3df19aeea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_StratusTechnologiesMember_01a025e3-7158-798d-9b3b-d851f16493e6" xlink:href="peng-20260828.xsd#peng_StratusTechnologiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a025e3-7158-759c-b21b-8be3df19aeea" xlink:to="loc_peng_StratusTechnologiesMember_01a025e3-7158-798d-9b3b-d851f16493e6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesPaidNet_01a0cda7-39dc-76ca-a9c5-7d43a5538382" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxesPaidNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_IncomeTaxesLineItems_01a025e3-7158-78c9-94ce-3dbbfab40d49" xlink:to="loc_us-gaap_IncomeTaxesPaidNet_01a0cda7-39dc-76ca-a9c5-7d43a5538382" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_EffectiveIncomeTaxRateReconciliationDomesticationAmount_01a025e3-7158-7cc6-b913-5eaf8d7ac748" xlink:href="peng-20260828.xsd#peng_EffectiveIncomeTaxRateReconciliationDomesticationAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_IncomeTaxesLineItems_01a025e3-7158-78c9-94ce-3dbbfab40d49" xlink:to="loc_peng_EffectiveIncomeTaxRateReconciliationDomesticationAmount_01a025e3-7158-7cc6-b913-5eaf8d7ac748" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_01a025e3-7158-70f6-b42f-8c1d1df3a11a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_IncomeTaxesLineItems_01a025e3-7158-78c9-94ce-3dbbfab40d49" xlink:to="loc_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_01a025e3-7158-70f6-b42f-8c1d1df3a11a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_01a025e3-7158-72f8-9174-8797fa9fd5d8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_IncomeTaxesLineItems_01a025e3-7158-78c9-94ce-3dbbfab40d49" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_01a025e3-7158-72f8-9174-8797fa9fd5d8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwards_01a025e3-7158-7a82-9d61-c84e1fe35e76" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLossCarryforwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_IncomeTaxesLineItems_01a025e3-7158-78c9-94ce-3dbbfab40d49" xlink:to="loc_us-gaap_OperatingLossCarryforwards_01a025e3-7158-7a82-9d61-c84e1fe35e76" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_OperatingLossCarryforwardSubjectToExpiration_01a025e3-7158-794f-94cd-5cb44095a1b2" xlink:href="peng-20260828.xsd#peng_OperatingLossCarryforwardSubjectToExpiration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_IncomeTaxesLineItems_01a025e3-7158-78c9-94ce-3dbbfab40d49" xlink:to="loc_peng_OperatingLossCarryforwardSubjectToExpiration_01a025e3-7158-794f-94cd-5cb44095a1b2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardAmount_01a025e3-7158-7534-8731-94b515bbc217" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TaxCreditCarryforwardAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_IncomeTaxesLineItems_01a025e3-7158-78c9-94ce-3dbbfab40d49" xlink:to="loc_us-gaap_TaxCreditCarryforwardAmount_01a025e3-7158-7534-8731-94b515bbc217" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_RemainingOperatingLossCarryForwardsIndefiniteLived_01a025e3-7158-77d4-bf1e-4f1c4ce118c5" xlink:href="peng-20260828.xsd#peng_RemainingOperatingLossCarryForwardsIndefiniteLived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_IncomeTaxesLineItems_01a025e3-7158-78c9-94ce-3dbbfab40d49" xlink:to="loc_peng_RemainingOperatingLossCarryForwardsIndefiniteLived_01a025e3-7158-77d4-bf1e-4f1c4ce118c5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_FiniteLivedOperatingLossCarryforwards_01a025e3-7158-7049-b17b-4cf715db2a3e" xlink:href="peng-20260828.xsd#peng_FiniteLivedOperatingLossCarryforwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_IncomeTaxesLineItems_01a025e3-7158-78c9-94ce-3dbbfab40d49" xlink:to="loc_peng_FiniteLivedOperatingLossCarryforwards_01a025e3-7158-7049-b17b-4cf715db2a3e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_IndefiniteLivedOperatingLossCarryforwards_01a025e3-7158-7843-8b83-5513e62f36e6" xlink:href="peng-20260828.xsd#peng_IndefiniteLivedOperatingLossCarryforwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_IncomeTaxesLineItems_01a025e3-7158-78c9-94ce-3dbbfab40d49" xlink:to="loc_peng_IndefiniteLivedOperatingLossCarryforwards_01a025e3-7158-7843-8b83-5513e62f36e6" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_01a025e3-7158-71d6-8b7a-d9404b387a82" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_IncomeTaxesLineItems_01a025e3-7158-78c9-94ce-3dbbfab40d49" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_01a025e3-7158-71d6-8b7a-d9404b387a82" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/IncomeTaxes2026EffectiveIncomeTaxRateReconciliationDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#IncomeTaxes2026EffectiveIncomeTaxRateReconciliationDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/IncomeTaxes2026EffectiveIncomeTaxRateReconciliationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationLineItems_01a048ee-926b-75bf-8818-b6e8995dcc17" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTable_01a048ee-926b-7d62-9c9f-19bb6be54d96" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationLineItems_01a048ee-926b-75bf-8818-b6e8995dcc17" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTable_01a048ee-926b-7d62-9c9f-19bb6be54d96" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_01a048ee-926b-70c9-a8ef-766d791aee4b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTable_01a048ee-926b-7d62-9c9f-19bb6be54d96" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_01a048ee-926b-70c9-a8ef-766d791aee4b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_01a048ee-926b-70c9-a8ef-766d791aee4b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_01a048ee-926b-70c9-a8ef-766d791aee4b" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_01a048ee-926b-70c9-a8ef-766d791aee4b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_01a048ee-926b-7f78-abb7-0e0b6655ed66" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_01a048ee-926b-70c9-a8ef-766d791aee4b" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_01a048ee-926b-7f78-abb7-0e0b6655ed66" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticCountryMember_01a0f188-b5ea-7450-8fd8-e125b59238b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DomesticCountryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_01a048ee-926b-7f78-abb7-0e0b6655ed66" xlink:to="loc_us-gaap_DomesticCountryMember_01a0f188-b5ea-7450-8fd8-e125b59238b3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_01a0f189-05fc-7260-93a8-417390c75ae3" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DomesticCountryMember_01a0f188-b5ea-7450-8fd8-e125b59238b3" xlink:to="loc_country_US_01a0f189-05fc-7260-93a8-417390c75ae3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCountryMember_01a048f4-2f44-7981-9212-206ff25a6fbb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignCountryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_01a048ee-926b-7f78-abb7-0e0b6655ed66" xlink:to="loc_us-gaap_ForeignCountryMember_01a048f4-2f44-7981-9212-206ff25a6fbb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_BR_01a0f13a-7486-7fe0-ac9c-b8e7a4c43138" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_BR"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ForeignCountryMember_01a048f4-2f44-7981-9212-206ff25a6fbb" xlink:to="loc_country_BR_01a0f13a-7486-7fe0-ac9c-b8e7a4c43138" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_KY_01a0f13a-b8a6-7635-993f-6999e28ae7d9" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_KY"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ForeignCountryMember_01a048f4-2f44-7981-9212-206ff25a6fbb" xlink:to="loc_country_KY_01a0f13a-b8a6-7635-993f-6999e28ae7d9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_LU_01a048ee-926b-7159-b8cc-c7c3ac81f3c7" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_LU"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ForeignCountryMember_01a048f4-2f44-7981-9212-206ff25a6fbb" xlink:to="loc_country_LU_01a048ee-926b-7159-b8cc-c7c3ac81f3c7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_MY_01a048ee-926b-77fa-99aa-326b6cacf73c" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_MY"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ForeignCountryMember_01a048f4-2f44-7981-9212-206ff25a6fbb" xlink:to="loc_country_MY_01a048ee-926b-77fa-99aa-326b6cacf73c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignTaxJurisdictionOtherMember_01a048ee-926b-7e9d-8f2e-71abd887da90" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignTaxJurisdictionOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ForeignCountryMember_01a048f4-2f44-7981-9212-206ff25a6fbb" xlink:to="loc_us-gaap_ForeignTaxJurisdictionOtherMember_01a048ee-926b-7e9d-8f2e-71abd887da90" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxCreditsAbstract_01a025e3-7158-78fb-a602-3f956a411d98" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxReconciliationTaxCreditsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationLineItems_01a048ee-926b-75bf-8818-b6e8995dcc17" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxCreditsAbstract_01a025e3-7158-78fb-a602-3f956a411d98" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_01a0f183-af4b-71e0-bcb1-f14bc08fac00" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxReconciliationTaxCreditsAbstract_01a025e3-7158-78fb-a602-3f956a411d98" xlink:to="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_01a0f183-af4b-71e0-bcb1-f14bc08fac00" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_01a0f183-af4b-7ff2-b341-84a29f6f8268" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxReconciliationTaxCreditsAbstract_01a025e3-7158-78fb-a602-3f956a411d98" xlink:to="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_01a0f183-af4b-7ff2-b341-84a29f6f8268" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectAmountAbstract_01a0f184-9e4a-7d98-bf03-eaef0b3cd15b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectAmountAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxReconciliationTaxCreditsAbstract_01a025e3-7158-78fb-a602-3f956a411d98" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectAmountAbstract_01a0f184-9e4a-7d98-bf03-eaef0b3cd15b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationGiltiAmount_01a0f183-af4b-71fd-aaa8-7fa1d73e10d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationGiltiAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectAmountAbstract_01a0f184-9e4a-7d98-bf03-eaef0b3cd15b" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationGiltiAmount_01a0f183-af4b-71fd-aaa8-7fa1d73e10d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_EffectiveIncomeTaxRateReconciliationUSTaxOnForeignBranchesAmount_01a0f183-af4b-74e2-8f2e-5a18ca2c561e" xlink:href="peng-20260828.xsd#peng_EffectiveIncomeTaxRateReconciliationUSTaxOnForeignBranchesAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectAmountAbstract_01a0f184-9e4a-7d98-bf03-eaef0b3cd15b" xlink:to="loc_peng_EffectiveIncomeTaxRateReconciliationUSTaxOnForeignBranchesAmount_01a0f183-af4b-74e2-8f2e-5a18ca2c561e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderOtherAmount_01a0f183-af4b-71ee-8e13-7cbd148a267d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderOtherAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectAmountAbstract_01a0f184-9e4a-7d98-bf03-eaef0b3cd15b" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderOtherAmount_01a0f183-af4b-71ee-8e13-7cbd148a267d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxCredits_01a0f183-af4b-7039-aaa1-eb07b361a1b8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxReconciliationTaxCredits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxReconciliationTaxCreditsAbstract_01a025e3-7158-78fb-a602-3f956a411d98" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxCredits_01a0f183-af4b-7039-aaa1-eb07b361a1b8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpense_01a0f183-af4b-7c44-b153-211003f434a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxReconciliationNondeductibleExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxReconciliationTaxCreditsAbstract_01a025e3-7158-78fb-a602-3f956a411d98" xlink:to="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpense_01a0f183-af4b-7c44-b153-211003f434a6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_01a0f183-af4b-7056-8e28-3300ad30bd93" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxReconciliationTaxCreditsAbstract_01a025e3-7158-78fb-a602-3f956a411d98" xlink:to="loc_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_01a0f183-af4b-7056-8e28-3300ad30bd93" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments_01a0f183-af4b-760c-855d-f46603d7730f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxReconciliationOtherAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxReconciliationTaxCreditsAbstract_01a025e3-7158-78fb-a602-3f956a411d98" xlink:to="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments_01a0f183-af4b-760c-855d-f46603d7730f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_EffectiveIncomeTaxRateReconciliationWithholdingTaxAmount_01a11cdc-6508-732b-b786-49647010e333" xlink:href="peng-20260828.xsd#peng_EffectiveIncomeTaxRateReconciliationWithholdingTaxAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxReconciliationTaxCreditsAbstract_01a025e3-7158-78fb-a602-3f956a411d98" xlink:to="loc_peng_EffectiveIncomeTaxRateReconciliationWithholdingTaxAmount_01a11cdc-6508-732b-b786-49647010e333" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential_01a0f183-af4b-7e7d-a9e6-b947b6f953e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxReconciliationTaxCreditsAbstract_01a025e3-7158-78fb-a602-3f956a411d98" xlink:to="loc_us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential_01a0f183-af4b-7e7d-a9e6-b947b6f953e9" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_EffectiveIncomeTaxRateReconciliationGainLossOnInvestmentsAmount_01a0f183-af4b-7ec2-bd7e-6c65843e9901" xlink:href="peng-20260828.xsd#peng_EffectiveIncomeTaxRateReconciliationGainLossOnInvestmentsAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxReconciliationTaxCreditsAbstract_01a025e3-7158-78fb-a602-3f956a411d98" xlink:to="loc_peng_EffectiveIncomeTaxRateReconciliationGainLossOnInvestmentsAmount_01a0f183-af4b-7ec2-bd7e-6c65843e9901" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_EffectiveIncomeTaxRateReconciliationTaxCreditTaxIncentivesAmount_01a0f183-af4b-7a48-b99c-1b2687f23889" xlink:href="peng-20260828.xsd#peng_EffectiveIncomeTaxRateReconciliationTaxCreditTaxIncentivesAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxReconciliationTaxCreditsAbstract_01a025e3-7158-78fb-a602-3f956a411d98" xlink:to="loc_peng_EffectiveIncomeTaxRateReconciliationTaxCreditTaxIncentivesAmount_01a0f183-af4b-7a48-b99c-1b2687f23889" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxAmount_01a0f183-af4b-7e49-b285-095b6dd71643" xlink:href="peng-20260828.xsd#peng_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxReconciliationTaxCreditsAbstract_01a025e3-7158-78fb-a602-3f956a411d98" xlink:to="loc_peng_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxAmount_01a0f183-af4b-7e49-b285-095b6dd71643" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxContingenciesForeign_01a0f183-af4b-71fc-99ed-171f927ee27d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxReconciliationTaxContingenciesForeign"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxReconciliationTaxCreditsAbstract_01a025e3-7158-78fb-a602-3f956a411d98" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxContingenciesForeign_01a0f183-af4b-71fc-99ed-171f927ee27d" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_01a0f183-af4b-7e38-bcae-da322de22309" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxReconciliationTaxCreditsAbstract_01a025e3-7158-78fb-a602-3f956a411d98" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_01a0f183-af4b-7e38-bcae-da322de22309" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_01a025e3-7158-7a67-b420-3464733bdbc0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationLineItems_01a048ee-926b-75bf-8818-b6e8995dcc17" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_01a025e3-7158-7a67-b420-3464733bdbc0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_01a0f184-0182-7003-b50e-ee0d86f5ddf8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_01a025e3-7158-7a67-b420-3464733bdbc0" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_01a0f184-0182-7003-b50e-ee0d86f5ddf8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_01a0f184-0182-7eab-8325-0ab0d85f83d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_01a025e3-7158-7a67-b420-3464733bdbc0" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_01a0f184-0182-7eab-8325-0ab0d85f83d3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectPercentAbstract_01a0f185-2af7-7417-abe3-8ba9f189c81b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectPercentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_01a025e3-7158-7a67-b420-3464733bdbc0" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectPercentAbstract_01a0f185-2af7-7417-abe3-8ba9f189c81b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationGiltiPercent_01a0f184-0182-7786-85af-2eb75e35d872" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationGiltiPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectPercentAbstract_01a0f185-2af7-7417-abe3-8ba9f189c81b" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationGiltiPercent_01a0f184-0182-7786-85af-2eb75e35d872" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_EffectiveIncomeTaxRateReconciliationUSTaxOnForeignBranchesPercent_01a0f184-0182-75a3-8634-d0490437acb6" xlink:href="peng-20260828.xsd#peng_EffectiveIncomeTaxRateReconciliationUSTaxOnForeignBranchesPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectPercentAbstract_01a0f185-2af7-7417-abe3-8ba9f189c81b" xlink:to="loc_peng_EffectiveIncomeTaxRateReconciliationUSTaxOnForeignBranchesPercent_01a0f184-0182-75a3-8634-d0490437acb6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderOtherPercent_01a0f184-0182-79a8-b919-e56947a73904" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderOtherPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectPercentAbstract_01a0f185-2af7-7417-abe3-8ba9f189c81b" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderOtherPercent_01a0f184-0182-79a8-b919-e56947a73904" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits_01a0f184-0182-7017-8470-ab9454fd4b68" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_01a025e3-7158-7a67-b420-3464733bdbc0" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits_01a0f184-0182-7017-8470-ab9454fd4b68" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense_01a0f184-0182-7dfd-bf84-6265889f07d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_01a025e3-7158-7a67-b420-3464733bdbc0" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense_01a0f184-0182-7dfd-bf84-6265889f07d3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance_01a0f184-0182-721d-8a6c-9ba91e5f8e27" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_01a025e3-7158-7a67-b420-3464733bdbc0" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance_01a0f184-0182-721d-8a6c-9ba91e5f8e27" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_01a0f184-0182-7687-ab67-337fcfcd5124" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_01a025e3-7158-7a67-b420-3464733bdbc0" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_01a0f184-0182-7687-ab67-337fcfcd5124" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential_01a0f184-0182-78a3-a51e-96c214e651d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_01a025e3-7158-7a67-b420-3464733bdbc0" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential_01a0f184-0182-78a3-a51e-96c214e651d3" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_EffectiveIncomeTaxRateReconciliationWithholdingTaxPercent_01a11cdb-919d-72f4-b938-1a2beb78765a" xlink:href="peng-20260828.xsd#peng_EffectiveIncomeTaxRateReconciliationWithholdingTaxPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_01a025e3-7158-7a67-b420-3464733bdbc0" xlink:to="loc_peng_EffectiveIncomeTaxRateReconciliationWithholdingTaxPercent_01a11cdb-919d-72f4-b938-1a2beb78765a" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_EffectiveIncomeTaxRateReconciliationGainLossOnInvestmentsPercent_01a0f184-0182-728e-a015-8dd6c5c86dcc" xlink:href="peng-20260828.xsd#peng_EffectiveIncomeTaxRateReconciliationGainLossOnInvestmentsPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_01a025e3-7158-7a67-b420-3464733bdbc0" xlink:to="loc_peng_EffectiveIncomeTaxRateReconciliationGainLossOnInvestmentsPercent_01a0f184-0182-728e-a015-8dd6c5c86dcc" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_EffectiveIncomeTaxRateReconciliationTaxCreditTaxIncentivesPercent_01a0f184-0182-79be-9278-2b052ee6f828" xlink:href="peng-20260828.xsd#peng_EffectiveIncomeTaxRateReconciliationTaxCreditTaxIncentivesPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_01a025e3-7158-7a67-b420-3464733bdbc0" xlink:to="loc_peng_EffectiveIncomeTaxRateReconciliationTaxCreditTaxIncentivesPercent_01a0f184-0182-79be-9278-2b052ee6f828" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxPercent_01a0f184-0182-739a-b0d6-4452ccabb697" xlink:href="peng-20260828.xsd#peng_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_01a025e3-7158-7a67-b420-3464733bdbc0" xlink:to="loc_peng_EffectiveIncomeTaxRateReconciliationGlobalMinimumTaxPercent_01a0f184-0182-739a-b0d6-4452ccabb697" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingenciesForeign_01a0f184-0182-7030-a351-e3e0dfad4de4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingenciesForeign"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_01a025e3-7158-7a67-b420-3464733bdbc0" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingenciesForeign_01a0f184-0182-7030-a351-e3e0dfad4de4" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_01a0f184-0182-7c1c-8791-d16e5935d815" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_01a025e3-7158-7a67-b420-3464733bdbc0" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_01a0f184-0182-7c1c-8791-d16e5935d815" xlink:type="arc" order="14"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/IncomeTaxesSummaryofDeferredTaxValuationAllowanceDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#IncomeTaxesSummaryofDeferredTaxValuationAllowanceDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/IncomeTaxesSummaryofDeferredTaxValuationAllowanceDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowanceLineItems_01a025e3-7158-738c-a7e2-6da740aad053" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValuationAllowanceLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowanceTable_01a025e3-7158-7c22-81e6-ab84c9ad0e11" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValuationAllowanceTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_01a025e3-7158-738c-a7e2-6da740aad053" xlink:to="loc_us-gaap_ValuationAllowanceTable_01a025e3-7158-7c22-81e6-ab84c9ad0e11" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_01a025e3-7158-76ae-9074-c1de54edf20b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValuationAllowancesAndReservesTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ValuationAllowanceTable_01a025e3-7158-7c22-81e6-ab84c9ad0e11" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_01a025e3-7158-76ae-9074-c1de54edf20b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_01a025e3-7158-76ae-9074-c1de54edf20b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValuationAllowancesAndReservesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_01a025e3-7158-76ae-9074-c1de54edf20b" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_01a025e3-7158-76ae-9074-c1de54edf20b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_01a025e3-7158-73c0-9d41-65f30778ceed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValuationAllowancesAndReservesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_01a025e3-7158-76ae-9074-c1de54edf20b" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_01a025e3-7158-73c0-9d41-65f30778ceed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember_01a025e3-7158-7f13-afcb-b5320178e7d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_01a025e3-7158-73c0-9d41-65f30778ceed" xlink:to="loc_us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember_01a025e3-7158-7f13-afcb-b5320178e7d3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_ValuationAllowanceRollForward_01a025e3-7158-7d81-843a-c85f66a5515a" xlink:href="peng-20260828.xsd#peng_ValuationAllowanceRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_01a025e3-7158-738c-a7e2-6da740aad053" xlink:to="loc_peng_ValuationAllowanceRollForward_01a025e3-7158-7d81-843a-c85f66a5515a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesBalance_01a025e3-7158-725c-bf28-6c18818feea6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValuationAllowancesAndReservesBalance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_ValuationAllowanceRollForward_01a025e3-7158-7d81-843a-c85f66a5515a" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesBalance_01a025e3-7158-725c-bf28-6c18818feea6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_01a025e3-7158-747a-b2b8-d804e4a9417f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_peng_ValuationAllowanceRollForward_01a025e3-7158-7d81-843a-c85f66a5515a" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_01a025e3-7158-747a-b2b8-d804e4a9417f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesBalance_01a025e3-7158-73f3-8932-b74b3094d08a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValuationAllowancesAndReservesBalance"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/EarningsPerShareDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#EarningsPerShareDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/EarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a025e3-7158-7686-bde4-64688b4e109e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_01a025e3-7158-7a3a-b407-4caa68d5506e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a025e3-7158-7686-bde4-64688b4e109e" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_01a025e3-7158-7a3a-b407-4caa68d5506e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_01a025e3-7158-7cfd-851c-e68e5a40ec92" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_01a025e3-7158-7a3a-b407-4caa68d5506e" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_01a025e3-7158-7cfd-851c-e68e5a40ec92" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a025e3-7158-7cfd-851c-e68e5a40ec92_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_01a025e3-7158-7cfd-851c-e68e5a40ec92" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a025e3-7158-7cfd-851c-e68e5a40ec92_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a025e3-7158-763c-b9e8-9b478c5bb8ab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_01a025e3-7158-7cfd-851c-e68e5a40ec92" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a025e3-7158-763c-b9e8-9b478c5bb8ab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_EquityPlansMember_01a025e3-7158-7919-a272-f30a0d53e9b0" xlink:href="peng-20260828.xsd#peng_EquityPlansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a025e3-7158-763c-b9e8-9b478c5bb8ab" xlink:to="loc_peng_EquityPlansMember_01a025e3-7158-7919-a272-f30a0d53e9b0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockMember_01a025e3-7158-7fc8-8eb2-80654759f1f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a025e3-7158-763c-b9e8-9b478c5bb8ab" xlink:to="loc_us-gaap_PreferredStockMember_01a025e3-7158-7fc8-8eb2-80654759f1f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperations_01a025e3-7158-71f3-8661-9dd1e9565212" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a025e3-7158-7686-bde4-64688b4e109e" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperations_01a025e3-7158-71f3-8661-9dd1e9565212" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_01a025e3-7158-7935-9133-f8178d302b90" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a025e3-7158-7686-bde4-64688b4e109e" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_01a025e3-7158-7935-9133-f8178d302b90" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a025e3-7158-7389-b755-b8e09e900afb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a025e3-7158-7686-bde4-64688b4e109e" xlink:to="loc_us-gaap_NetIncomeLoss_01a025e3-7158-7389-b755-b8e09e900afb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockDividendsIncomeStatementImpact_01a025e3-7158-78ad-bd23-e3570d1cb170" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockDividendsIncomeStatementImpact"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a025e3-7158-7686-bde4-64688b4e109e" xlink:to="loc_us-gaap_PreferredStockDividendsIncomeStatementImpact_01a025e3-7158-78ad-bd23-e3570d1cb170" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_NetIncomeLossAvailableForDistributionBasic_01a025e3-7158-7986-8b1c-d4115dffb23e" xlink:href="peng-20260828.xsd#peng_NetIncomeLossAvailableForDistributionBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a025e3-7158-7686-bde4-64688b4e109e" xlink:to="loc_peng_NetIncomeLossAvailableForDistributionBasic_01a025e3-7158-7986-8b1c-d4115dffb23e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_01a025e3-7158-7f26-89ad-4c74370617fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a025e3-7158-7686-bde4-64688b4e109e" xlink:to="loc_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_01a025e3-7158-7f26-89ad-4c74370617fe" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_01a025e3-7158-782b-a684-2b03b2602a4e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a025e3-7158-7686-bde4-64688b4e109e" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_01a025e3-7158-782b-a684-2b03b2602a4e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_01a025e3-7158-7c4f-ad22-d938a6d52b32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a025e3-7158-7686-bde4-64688b4e109e" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_01a025e3-7158-7c4f-ad22-d938a6d52b32" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_01a025e3-7158-783c-a380-aa387c4882be" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a025e3-7158-7686-bde4-64688b4e109e" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_01a025e3-7158-783c-a380-aa387c4882be" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_DilutiveEffectOfEquityPlansAndConvertibleNotes_01a025e3-7158-7c67-bf14-91a3ddec5908" xlink:href="peng-20260828.xsd#peng_DilutiveEffectOfEquityPlansAndConvertibleNotes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a025e3-7158-7686-bde4-64688b4e109e" xlink:to="loc_peng_DilutiveEffectOfEquityPlansAndConvertibleNotes_01a025e3-7158-7c67-bf14-91a3ddec5908" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_01a025e3-7158-7b0c-9e86-b5e24b934961" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a025e3-7158-7686-bde4-64688b4e109e" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_01a025e3-7158-7b0c-9e86-b5e24b934961" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicAbstract_01a025e3-7158-72a1-9987-de787acc1ac5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasicAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a025e3-7158-7686-bde4-64688b4e109e" xlink:to="loc_us-gaap_EarningsPerShareBasicAbstract_01a025e3-7158-72a1-9987-de787acc1ac5" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_01a025e3-7158-7f67-a1f3-bacd7772815c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsPerBasicShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_01a025e3-7158-72a1-9987-de787acc1ac5" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_01a025e3-7158-7f67-a1f3-bacd7772815c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_01a025e3-7158-723b-8f01-e764ec18432f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_01a025e3-7158-72a1-9987-de787acc1ac5" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_01a025e3-7158-723b-8f01-e764ec18432f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_01a025e3-7158-713f-aae2-a3724afd0b44" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_01a025e3-7158-72a1-9987-de787acc1ac5" xlink:to="loc_us-gaap_EarningsPerShareBasic_01a025e3-7158-713f-aae2-a3724afd0b44" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDilutedAbstract_01a025e3-7158-7c53-8a1f-c7c7ff20f270" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDilutedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a025e3-7158-7686-bde4-64688b4e109e" xlink:to="loc_us-gaap_EarningsPerShareDilutedAbstract_01a025e3-7158-7c53-8a1f-c7c7ff20f270" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_01a025e3-7158-738c-9bc0-5e4bc2d19d64" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_01a025e3-7158-7c53-8a1f-c7c7ff20f270" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_01a025e3-7158-738c-9bc0-5e4bc2d19d64" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_01a025e3-7158-75b9-9ff8-b31e94ab1c47" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_01a025e3-7158-7c53-8a1f-c7c7ff20f270" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_01a025e3-7158-75b9-9ff8-b31e94ab1c47" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_01a025e3-7158-7354-bf7d-f625bf8524f7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_01a025e3-7158-7c53-8a1f-c7c7ff20f270" xlink:to="loc_us-gaap_EarningsPerShareDiluted_01a025e3-7158-7354-bf7d-f625bf8524f7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_01a025e3-7158-717a-83b0-fd10ea1b1ccd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a025e3-7158-7686-bde4-64688b4e109e" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_01a025e3-7158-717a-83b0-fd10ea1b1ccd" xlink:type="arc" order="13"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/SegmentandOtherInformationScheduleofSegmentReportingInformationDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#SegmentandOtherInformationScheduleofSegmentReportingInformationDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/SegmentandOtherInformationScheduleofSegmentReportingInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-7158-7385-b48f-4422c4e660fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a025e3-7158-7ed3-b03e-bf913c744179" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-7158-7385-b48f-4422c4e660fa" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a025e3-7158-7ed3-b03e-bf913c744179" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_01a025e3-7158-7de2-9444-815cda083497" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a025e3-7158-7ed3-b03e-bf913c744179" xlink:to="loc_srt_ConsolidationItemsAxis_01a025e3-7158-7de2-9444-815cda083497" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_01a025e3-7158-7de2-9444-815cda083497_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_01a025e3-7158-7de2-9444-815cda083497" xlink:to="loc_srt_ConsolidationItemsDomain_01a025e3-7158-7de2-9444-815cda083497_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_01a025e3-7158-7906-a399-84fb0c6963df" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_01a025e3-7158-7de2-9444-815cda083497" xlink:to="loc_srt_ConsolidationItemsDomain_01a025e3-7158-7906-a399-84fb0c6963df" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_01a025e3-7158-744a-b23a-e407240d939a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_01a025e3-7158-7906-a399-84fb0c6963df" xlink:to="loc_us-gaap_OperatingSegmentsMember_01a025e3-7158-744a-b23a-e407240d939a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_01a025e3-7158-797d-804d-c6f6b60a6ec7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_01a025e3-7158-7906-a399-84fb0c6963df" xlink:to="loc_us-gaap_CorporateNonSegmentMember_01a025e3-7158-797d-804d-c6f6b60a6ec7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_01a025e3-7158-77f6-992b-b9d1e8541a6c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a025e3-7158-7ed3-b03e-bf913c744179" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_01a025e3-7158-77f6-992b-b9d1e8541a6c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a025e3-7158-77f6-992b-b9d1e8541a6c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a025e3-7158-77f6-992b-b9d1e8541a6c" xlink:to="loc_us-gaap_SegmentDomain_01a025e3-7158-77f6-992b-b9d1e8541a6c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a025e3-7158-7ad2-a760-0eff9f10c790" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a025e3-7158-77f6-992b-b9d1e8541a6c" xlink:to="loc_us-gaap_SegmentDomain_01a025e3-7158-7ad2-a760-0eff9f10c790" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_AdvancedComputingSegmentMember_01a025e3-7158-7b01-bc51-1fb9c6478119" xlink:href="peng-20260828.xsd#peng_AdvancedComputingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a025e3-7158-7ad2-a760-0eff9f10c790" xlink:to="loc_peng_AdvancedComputingSegmentMember_01a025e3-7158-7b01-bc51-1fb9c6478119" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_IntegratedMemorySegmentMember_01a025e3-7158-7acc-9d3b-02536d657a66" xlink:href="peng-20260828.xsd#peng_IntegratedMemorySegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a025e3-7158-7ad2-a760-0eff9f10c790" xlink:to="loc_peng_IntegratedMemorySegmentMember_01a025e3-7158-7acc-9d3b-02536d657a66" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_OptimizedLEDSegmentMember_01a025e3-7158-7a45-a6e9-6c9d442735b5" xlink:href="peng-20260828.xsd#peng_OptimizedLEDSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a025e3-7158-7ad2-a760-0eff9f10c790" xlink:to="loc_peng_OptimizedLEDSegmentMember_01a025e3-7158-7a45-a6e9-6c9d442735b5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a025e3-7158-79da-a6f1-fd4b8327c011" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-7158-7385-b48f-4422c4e660fa" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a025e3-7158-79da-a6f1-fd4b8327c011" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_01a025e3-7158-7f12-8135-69224b428427" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-7158-7385-b48f-4422c4e660fa" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_01a025e3-7158-7f12-8135-69224b428427" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_01a025e3-7158-7475-b3a7-e06a35e1e9b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-7158-7385-b48f-4422c4e660fa" xlink:to="loc_us-gaap_OperatingExpenses_01a025e3-7158-7475-b3a7-e06a35e1e9b2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_01a025e3-7158-79ca-8b4c-b46fe8556055" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-7158-7385-b48f-4422c4e660fa" xlink:to="loc_us-gaap_OperatingIncomeLoss_01a025e3-7158-79ca-8b4c-b46fe8556055" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_01a025e3-7158-7b52-8543-7b99073d9469" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-7158-7385-b48f-4422c4e660fa" xlink:to="loc_us-gaap_ShareBasedCompensation_01a025e3-7158-7b52-8543-7b99073d9469" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_AmortizationOfIntangibleAssetsAcquired_01a025e3-7158-771e-bedb-5261b6f84e0e" xlink:href="peng-20260828.xsd#peng_AmortizationOfIntangibleAssetsAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-7158-7385-b48f-4422c4e660fa" xlink:to="loc_peng_AmortizationOfIntangibleAssetsAcquired_01a025e3-7158-771e-bedb-5261b6f84e0e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_CostOfGoodsAndServicesSoldRestructuringCharges_01a025e3-7158-7a1e-82a6-7a1de8aff4e8" xlink:href="peng-20260828.xsd#peng_CostOfGoodsAndServicesSoldRestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-7158-7385-b48f-4422c4e660fa" xlink:to="loc_peng_CostOfGoodsAndServicesSoldRestructuringCharges_01a025e3-7158-7a1e-82a6-7a1de8aff4e8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationIntegrationRelatedCosts_01a025e3-7158-7965-b0d3-76d892ada7fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationIntegrationRelatedCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-7158-7385-b48f-4422c4e660fa" xlink:to="loc_us-gaap_BusinessCombinationIntegrationRelatedCosts_01a025e3-7158-7965-b0d3-76d892ada7fd" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_RedomiciliationCosts_01a025e3-7158-71af-a56f-c1655c2e2ecd" xlink:href="peng-20260828.xsd#peng_RedomiciliationCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-7158-7385-b48f-4422c4e660fa" xlink:to="loc_peng_RedomiciliationCosts_01a025e3-7158-71af-a56f-c1655c2e2ecd" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_01a025e3-7158-7f4a-ab94-48b24ea5d1bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-7158-7385-b48f-4422c4e660fa" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_01a025e3-7158-7f4a-ab94-48b24ea5d1bc" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_01a025e3-7158-72c6-abb3-fc4adb1af995" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-7158-7385-b48f-4422c4e660fa" xlink:to="loc_us-gaap_RestructuringCharges_01a025e3-7158-72c6-abb3-fc4adb1af995" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherGeneralExpense_01a025e3-7158-7f39-bfe7-42a450d787e2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherGeneralExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-7158-7385-b48f-4422c4e660fa" xlink:to="loc_us-gaap_OtherGeneralExpense_01a025e3-7158-7f39-bfe7-42a450d787e2" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_OperatingExpensesUnallocated_01a025e3-7158-7331-b311-01fe9acb155e" xlink:href="peng-20260828.xsd#peng_OperatingExpensesUnallocated"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-7158-7385-b48f-4422c4e660fa" xlink:to="loc_peng_OperatingExpensesUnallocated_01a025e3-7158-7331-b311-01fe9acb155e" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_01a025e3-7158-7df6-8c71-178c0a8b5fca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-7158-7385-b48f-4422c4e660fa" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_01a025e3-7158-7df6-8c71-178c0a8b5fca" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a025e3-7158-78b0-8428-29a619361796" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-7158-7385-b48f-4422c4e660fa" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a025e3-7158-78b0-8428-29a619361796" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_01a025e3-7158-7456-80dd-e1f3aab4f1cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Depreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-7158-7385-b48f-4422c4e660fa" xlink:to="loc_us-gaap_Depreciation_01a025e3-7158-7456-80dd-e1f3aab4f1cd" xlink:type="arc" order="15"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/RelatedPartyTransactionsDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#RelatedPartyTransactionsDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/RelatedPartyTransactionsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_01a025e3-7158-74e2-8b31-73056f8a7f01" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_01a025e3-7158-7728-b7b0-70666e1e93dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a025e3-7158-74e2-8b31-73056f8a7f01" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_01a025e3-7158-7728-b7b0-70666e1e93dd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a025e3-7158-773b-a07e-7d90b7a49722" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_01a025e3-7158-7728-b7b0-70666e1e93dd" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a025e3-7158-773b-a07e-7d90b7a49722" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_01a025e3-7158-773b-a07e-7d90b7a49722_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a025e3-7158-773b-a07e-7d90b7a49722" xlink:to="loc_us-gaap_RelatedPartyDomain_01a025e3-7158-773b-a07e-7d90b7a49722_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_01a025e3-7158-751a-a517-f450fe921d3b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a025e3-7158-773b-a07e-7d90b7a49722" xlink:to="loc_us-gaap_RelatedPartyDomain_01a025e3-7158-751a-a517-f450fe921d3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_01a025e3-7158-7596-9714-3eaa3a1bfa16" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_01a025e3-7158-751a-a517-f450fe921d3b" xlink:to="loc_us-gaap_RelatedPartyMember_01a025e3-7158-7596-9714-3eaa3a1bfa16" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_RelatedPartyVotingInterestPercentage_01a025e3-7158-75f9-a149-f38777e983da" xlink:href="peng-20260828.xsd#peng_RelatedPartyVotingInterestPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a025e3-7158-74e2-8b31-73056f8a7f01" xlink:to="loc_peng_RelatedPartyVotingInterestPercentage_01a025e3-7158-75f9-a149-f38777e983da" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a025e3-7158-7d6c-98a2-d0619376f8ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a025e3-7158-74e2-8b31-73056f8a7f01" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a025e3-7158-7d6c-98a2-d0619376f8ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_RelatedPartyTransactionContractLiabilityAmount_01a025e3-7158-7907-b1e2-ee19b397fab9" xlink:href="peng-20260828.xsd#peng_RelatedPartyTransactionContractLiabilityAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a025e3-7158-74e2-8b31-73056f8a7f01" xlink:to="loc_peng_RelatedPartyTransactionContractLiabilityAmount_01a025e3-7158-7907-b1e2-ee19b397fab9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_01a0cdb3-8b17-741f-a936-ead6d9db7d00" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a025e3-7158-74e2-8b31-73056f8a7f01" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_01a0cdb3-8b17-741f-a936-ead6d9db7d00" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/ConcentrationsDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#ConcentrationsDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/ConcentrationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskLineItems_01a025e3-71f9-7844-ae71-9c929a07f20e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTable_01a025e3-7158-7154-95c6-fd081397db24" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_01a025e3-71f9-7844-ae71-9c929a07f20e" xlink:to="loc_us-gaap_ConcentrationRiskTable_01a025e3-7158-7154-95c6-fd081397db24" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_01a025e3-7158-7705-8d5a-3e224defbf3e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_01a025e3-7158-7154-95c6-fd081397db24" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_01a025e3-7158-7705-8d5a-3e224defbf3e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a025e3-7158-7705-8d5a-3e224defbf3e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_01a025e3-7158-7705-8d5a-3e224defbf3e" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a025e3-7158-7705-8d5a-3e224defbf3e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a025e3-71f9-717e-9060-da899efbb377" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_01a025e3-7158-7705-8d5a-3e224defbf3e" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a025e3-71f9-717e-9060-da899efbb377" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesRevenueNetMember_01a025e3-71f9-7d0d-afc8-4664cbb02a1d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SalesRevenueNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a025e3-71f9-717e-9060-da899efbb377" xlink:to="loc_us-gaap_SalesRevenueNetMember_01a025e3-71f9-7d0d-afc8-4664cbb02a1d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_01a025e3-71f9-7f25-a3d4-cec781faae48" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_01a025e3-7158-7154-95c6-fd081397db24" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_01a025e3-71f9-7f25-a3d4-cec781faae48" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_01a025e3-71f9-7f25-a3d4-cec781faae48_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_01a025e3-71f9-7f25-a3d4-cec781faae48" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_01a025e3-71f9-7f25-a3d4-cec781faae48_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_01a025e3-71f9-7b25-80ea-3962934a6a9f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_01a025e3-71f9-7f25-a3d4-cec781faae48" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_01a025e3-71f9-7b25-80ea-3962934a6a9f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerConcentrationRiskMember_01a025e3-71f9-7842-bd88-fa16db4c19f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CustomerConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_01a025e3-71f9-7b25-80ea-3962934a6a9f" xlink:to="loc_us-gaap_CustomerConcentrationRiskMember_01a025e3-71f9-7842-bd88-fa16db4c19f3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplierConcentrationRiskMember_01a025e3-71f9-78e7-8705-8dec3708c7d0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SupplierConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_01a025e3-71f9-7b25-80ea-3962934a6a9f" xlink:to="loc_us-gaap_SupplierConcentrationRiskMember_01a025e3-71f9-78e7-8705-8dec3708c7d0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_01a025e3-71f9-79c2-9fc4-b2d9984d261d" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MajorCustomersAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_01a025e3-7158-7154-95c6-fd081397db24" xlink:to="loc_srt_MajorCustomersAxis_01a025e3-71f9-79c2-9fc4-b2d9984d261d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_01a025e3-71f9-79c2-9fc4-b2d9984d261d_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MajorCustomersAxis_01a025e3-71f9-79c2-9fc4-b2d9984d261d" xlink:to="loc_srt_NameOfMajorCustomerDomain_01a025e3-71f9-79c2-9fc4-b2d9984d261d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_01a025e3-71f9-74b2-a1c4-f73544cd78de" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MajorCustomersAxis_01a025e3-71f9-79c2-9fc4-b2d9984d261d" xlink:to="loc_srt_NameOfMajorCustomerDomain_01a025e3-71f9-74b2-a1c4-f73544cd78de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TenLargestCustomersMember_01a025e3-71f9-7519-a544-322b443a8105" xlink:href="peng-20260828.xsd#peng_TenLargestCustomersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_01a025e3-71f9-74b2-a1c4-f73544cd78de" xlink:to="loc_peng_TenLargestCustomersMember_01a025e3-71f9-7519-a544-322b443a8105" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_CustomerOneMember_01a025e3-71f9-7eb0-9799-dc9f58e70c2a" xlink:href="peng-20260828.xsd#peng_CustomerOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_01a025e3-71f9-74b2-a1c4-f73544cd78de" xlink:to="loc_peng_CustomerOneMember_01a025e3-71f9-7eb0-9799-dc9f58e70c2a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_01a025e3-71f9-7e93-96e0-3a88117a33d0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_01a025e3-7158-7154-95c6-fd081397db24" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_01a025e3-71f9-7e93-96e0-3a88117a33d0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a025e3-71f9-7e93-96e0-3a88117a33d0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a025e3-71f9-7e93-96e0-3a88117a33d0" xlink:to="loc_us-gaap_SegmentDomain_01a025e3-71f9-7e93-96e0-3a88117a33d0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a025e3-71f9-726b-ba67-2d9dcd9b47cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a025e3-71f9-7e93-96e0-3a88117a33d0" xlink:to="loc_us-gaap_SegmentDomain_01a025e3-71f9-726b-ba67-2d9dcd9b47cf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_IntegratedMemoryMember_01a025e3-71f9-7273-98b7-c930bc2d0d0c" xlink:href="peng-20260828.xsd#peng_IntegratedMemoryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a025e3-71f9-726b-ba67-2d9dcd9b47cf" xlink:to="loc_peng_IntegratedMemoryMember_01a025e3-71f9-7273-98b7-c930bc2d0d0c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_AdvancedComputingMember_01a025e3-71f9-7573-be1e-f442efc17514" xlink:href="peng-20260828.xsd#peng_AdvancedComputingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a025e3-71f9-726b-ba67-2d9dcd9b47cf" xlink:to="loc_peng_AdvancedComputingMember_01a025e3-71f9-7573-be1e-f442efc17514" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis_01a1563e-59a6-7510-869b-b76be712037c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_01a025e3-7158-7154-95c6-fd081397db24" xlink:to="loc_us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis_01a1563e-59a6-7510-869b-b76be712037c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionSupplierDomain_01a1563e-59a6-7510-869b-b76be712037c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionSupplierDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis_01a1563e-59a6-7510-869b-b76be712037c" xlink:to="loc_us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionSupplierDomain_01a1563e-59a6-7510-869b-b76be712037c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionSupplierDomain_01a1563e-59a6-7c82-9e14-e52ed6641894" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionSupplierDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis_01a1563e-59a6-7510-869b-b76be712037c" xlink:to="loc_us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionSupplierDomain_01a1563e-59a6-7c82-9e14-e52ed6641894" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TopTwoSuppliersMember_01a1563e-8b50-77c6-b2b2-a5f530d73d93" xlink:href="peng-20260828.xsd#peng_TopTwoSuppliersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionSupplierDomain_01a1563e-59a6-7c82-9e14-e52ed6641894" xlink:to="loc_peng_TopTwoSuppliersMember_01a1563e-8b50-77c6-b2b2-a5f530d73d93" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_01a025e3-71f9-7e8d-b79f-fdfe4486cec1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_01a025e3-71f9-7844-ae71-9c929a07f20e" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_01a025e3-71f9-7e8d-b79f-fdfe4486cec1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a1358d-0b1f-75bc-8f82-ecc10413b7dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_01a025e3-71f9-7844-ae71-9c929a07f20e" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a1358d-0b1f-75bc-8f82-ecc10413b7dd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_InventoryPurchases_01a025e3-71f9-70d5-9e70-a19bd46fd7f5" xlink:href="peng-20260828.xsd#peng_InventoryPurchases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_01a025e3-71f9-7844-ae71-9c929a07f20e" xlink:to="loc_peng_InventoryPurchases_01a025e3-71f9-70d5-9e70-a19bd46fd7f5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_01a025e3-71f9-78bc-bb66-0dc0a428fc20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_01a025e3-71f9-7844-ae71-9c929a07f20e" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_01a025e3-71f9-78bc-bb66-0dc0a428fc20" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.penguinsolutions.com/role/GeographicInformationDetails" xlink:type="simple" xlink:href="peng-20260828.xsd#GeographicInformationDetails"/>
  <link:definitionLink xlink:role="http://www.penguinsolutions.com/role/GeographicInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-71f9-764f-a622-b9c075efc02b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_01a025e3-71f9-7064-b72c-ad0ad3a328a7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-71f9-764f-a622-b9c075efc02b" xlink:to="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_01a025e3-71f9-7064-b72c-ad0ad3a328a7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_01a025e3-71f9-7f78-a264-4fb6edee46af" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_01a025e3-71f9-7064-b72c-ad0ad3a328a7" xlink:to="loc_srt_StatementGeographicalAxis_01a025e3-71f9-7f78-a264-4fb6edee46af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_01a025e3-71f9-7f78-a264-4fb6edee46af_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_01a025e3-71f9-7f78-a264-4fb6edee46af" xlink:to="loc_srt_SegmentGeographicalDomain_01a025e3-71f9-7f78-a264-4fb6edee46af_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_01a025e3-71f9-76aa-82f9-12e5b075a95a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_01a025e3-71f9-7f78-a264-4fb6edee46af" xlink:to="loc_srt_SegmentGeographicalDomain_01a025e3-71f9-76aa-82f9-12e5b075a95a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_01a025e3-71f9-744f-83b5-53e3fe97ee4d" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_01a025e3-71f9-76aa-82f9-12e5b075a95a" xlink:to="loc_country_US_01a025e3-71f9-744f-83b5-53e3fe97ee4d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CN_01a025e3-71f9-7585-b4f2-fec1e5a38186" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_CN"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_01a025e3-71f9-76aa-82f9-12e5b075a95a" xlink:to="loc_country_CN_01a025e3-71f9-7585-b4f2-fec1e5a38186" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_MY_01a025e3-71f9-7af6-a4ee-25e758789943" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_MY"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_01a025e3-71f9-76aa-82f9-12e5b075a95a" xlink:to="loc_country_MY_01a025e3-71f9-7af6-a4ee-25e758789943" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EuropeMember_01a025e3-71f9-7a4c-b749-d523e85f1ea8" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EuropeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_01a025e3-71f9-76aa-82f9-12e5b075a95a" xlink:to="loc_srt_EuropeMember_01a025e3-71f9-7a4c-b749-d523e85f1ea8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_MX_01a025e3-71f9-73d2-aa4b-5660b1faab5b" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_MX"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_01a025e3-71f9-76aa-82f9-12e5b075a95a" xlink:to="loc_country_MX_01a025e3-71f9-73d2-aa4b-5660b1faab5b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_OtherCountryMember_01a025e3-71f9-7238-b5ad-9c53fa98fd0e" xlink:href="peng-20260828.xsd#peng_OtherCountryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_01a025e3-71f9-76aa-82f9-12e5b075a95a" xlink:to="loc_peng_OtherCountryMember_01a025e3-71f9-7238-b5ad-9c53fa98fd0e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a025e3-71f9-7952-a63b-5fabb2ed8d74" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-71f9-764f-a622-b9c075efc02b" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a025e3-71f9-7952-a63b-5fabb2ed8d74" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncurrentAssets_01a025e3-71f9-7698-898a-4e82420aba80" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a025e3-71f9-764f-a622-b9c075efc02b" xlink:to="loc_us-gaap_NoncurrentAssets_01a025e3-71f9-7698-898a-4e82420aba80" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://fasb.org/srt/role/srt-eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-roles-2026.xsd#eedm1"/>
  <link:definitionLink xlink:role="http://fasb.org/srt/role/srt-eedm/ExtensibleEnumerationLists" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementAbstract" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:type="arc" order="691"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingIncomeExpenseNet" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherOperatingIncomeExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementAbstract" xlink:to="loc_us-gaap_OtherOperatingIncomeExpenseNet" xlink:type="arc" order="692"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract" xlink:to="loc_us-gaap_Assets" xlink:type="arc" order="101"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/ecd/role/IndividualsOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#IndividualsOnly"/>
  <link:definitionLink xlink:role="http://xbrl.sec.gov/ecd/role/IndividualsOnly" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AllIndividualsMember" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AllIndividualsMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_peng_TonyFreyMember_01a0490a-521f-7676-999a-af08b2a4bda1" xlink:href="peng-20260828.xsd#peng_TonyFreyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ecd_AllIndividualsMember" xlink:to="loc_peng_TonyFreyMember_01a0490a-521f-7676-999a-af08b2a4bda1" xlink:type="arc" order="2"/>
  </link:definitionLink>
</link:linkbase>
