<?xml version="1.0" encoding="US-ASCII"?>
<!-- Generated by Broadridge Transform (tm) - http://www.broadridge.com -->
<!-- Created: Fri May 22 01:08:49 UTC 2026 -->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:xbrldt="http://xbrl.org/2005/xbrldt">
  <roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/spac/2026/spac-2026.xsd#SecurityClassesOnly" roleURI="http://xbrl.sec.gov/spac/role/SecurityClassesOnly"/>
  <roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/spac/2026/spac-2026.xsd#DilutionSourcesOnly" roleURI="http://xbrl.sec.gov/spac/role/DilutionSourcesOnly"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" arcroleURI="http://xbrl.org/int/dim/arcrole/all"/>
  <definitionLink xlink:role="http://xbrl.sec.gov/spac/role/SecurityClassesOnly" xlink:type="extended">
    <loc xlink:type="locator" xlink:label="spac_AllSecurityClassesMember" xlink:href="https://xbrl.sec.gov/spac/2026/spac-2026.xsd#spac_AllSecurityClassesMember"/>
    <loc xlink:type="locator" xlink:label="aac_ContributionReceivableMember" xlink:href="aac-20260521.xsd#aac_ContributionReceivableMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="spac_AllSecurityClassesMember" xlink:to="aac_ContributionReceivableMember" order="17" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="aac_OfferingCostsAccruedInAdvanceExcludedFromTangibleBookValueMember" xlink:href="aac-20260521.xsd#aac_OfferingCostsAccruedInAdvanceExcludedFromTangibleBookValueMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="spac_AllSecurityClassesMember" xlink:to="aac_OfferingCostsAccruedInAdvanceExcludedFromTangibleBookValueMember" order="18" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="spac_OverallotmentLiabilityMember" xlink:href="https://xbrl.sec.gov/spac/2026/spac-2026.xsd#spac_OverallotmentLiabilityMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="spac_AllSecurityClassesMember" xlink:to="spac_OverallotmentLiabilityMember" order="19" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="spac_DeferredUnderwritingCommissionsMember" xlink:href="https://xbrl.sec.gov/spac/2026/spac-2026.xsd#spac_DeferredUnderwritingCommissionsMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="spac_AllSecurityClassesMember" xlink:to="spac_DeferredUnderwritingCommissionsMember" order="20" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="aac_ProceedsHeldInTrustSubjectToRedemptionMember" xlink:href="aac-20260521.xsd#aac_ProceedsHeldInTrustSubjectToRedemptionMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="spac_AllSecurityClassesMember" xlink:to="aac_ProceedsHeldInTrustSubjectToRedemptionMember" order="21" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="aac_OrdinarySharesForfeitedIfOverallotmentIsNotExercisedMember" xlink:href="aac-20260521.xsd#aac_OrdinarySharesForfeitedIfOverallotmentIsNotExercisedMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="spac_AllSecurityClassesMember" xlink:to="aac_OrdinarySharesForfeitedIfOverallotmentIsNotExercisedMember" order="22" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="aac_OrdinarySharesIncludedInThePublicUnitsOfferedMember" xlink:href="aac-20260521.xsd#aac_OrdinarySharesIncludedInThePublicUnitsOfferedMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="spac_AllSecurityClassesMember" xlink:to="aac_OrdinarySharesIncludedInThePublicUnitsOfferedMember" order="23" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="aac_OrdinarySharesIncludedInThePrivateUnitsMember" xlink:href="aac-20260521.xsd#aac_OrdinarySharesIncludedInThePrivateUnitsMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="spac_AllSecurityClassesMember" xlink:to="aac_OrdinarySharesIncludedInThePrivateUnitsMember" order="24" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="aac_OrdinarySharesUnderlyingTheRightsToBeIncludedInThePublicUnitsMember" xlink:href="aac-20260521.xsd#aac_OrdinarySharesUnderlyingTheRightsToBeIncludedInThePublicUnitsMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="spac_AllSecurityClassesMember" xlink:to="aac_OrdinarySharesUnderlyingTheRightsToBeIncludedInThePublicUnitsMember" order="25" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="aac_OrdinarySharesUnderlyingTheRightsToBeIncludedInThePrivateUnitsMember" xlink:href="aac-20260521.xsd#aac_OrdinarySharesUnderlyingTheRightsToBeIncludedInThePrivateUnitsMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="spac_AllSecurityClassesMember" xlink:to="aac_OrdinarySharesUnderlyingTheRightsToBeIncludedInThePrivateUnitsMember" order="26" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="aac_RepresentativeShareMember" xlink:href="aac-20260521.xsd#aac_RepresentativeShareMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="spac_AllSecurityClassesMember" xlink:to="aac_RepresentativeShareMember" order="27" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="aac_SharesSubjectToRedemptionMember" xlink:href="aac-20260521.xsd#aac_SharesSubjectToRedemptionMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="spac_AllSecurityClassesMember" xlink:to="aac_SharesSubjectToRedemptionMember" order="28" xbrldt:closed="true"/>
  </definitionLink>
  <definitionLink xlink:role="http://xbrl.sec.gov/spac/role/DilutionSourcesOnly" xlink:type="extended">
    <loc xlink:type="locator" xlink:label="spac_AllDilutionSourcesMember" xlink:href="https://xbrl.sec.gov/spac/2026/spac-2026.xsd#spac_AllDilutionSourcesMember"/>
    <loc xlink:type="locator" xlink:label="aac_WithoutOverAllotmentMember" xlink:href="aac-20260521.xsd#aac_WithoutOverAllotmentMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="spac_AllDilutionSourcesMember" xlink:to="aac_WithoutOverAllotmentMember" order="23" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="aac_WithOverAllotmentMember" xlink:href="aac-20260521.xsd#aac_WithOverAllotmentMember"/>
<!-- [WMV7][D0nueNGeW/VxwyrcrCVCX/K0AgrQ1izm3BGeFIRpr2Fqyh5xllXiPkgVuLZNEsxMc/CjYzXFTmGr+fSbAk9+af2FEGNVS/wtJJGArTp6fmiCxZu879eXiQ1DX8Ed1Ujs96oj4qV9hMqQDCOwsVZkti3InNJhWJpFeg/cl6QDW/qacCIvgR59+A7R4ZgPR/V6FLd9K/AREkNeKHNFf2HY7d9Syd4PBFdNAD35qffXa1ZJ1a3IiXnMYRxwCMALv/8lZalwlnJblZKnUVvCTMcWXkAheq9UeuBU3DW4WZqoch8o7ZZeLyOUz4fUTdl7cFLCpHsgxCaySU+P9OxPOY0pdq+uZzMN3aNbz4kkSxjZeaFSu73exYkPv9ld5YXgUt8F] CSR-->
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="spac_AllDilutionSourcesMember" xlink:to="aac_WithOverAllotmentMember" order="24" xbrldt:closed="true"/>
  </definitionLink>
</linkbase>
