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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a16b8d-e4d9-7e22-9ce5-cc9d70d81c26,g:8958dbf2-c968-448b-8288-9ecec18c6aa8-->
<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://xbrl.sec.gov/oef/role/SeriesOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#SeriesOnly"/>
  <link:definitionLink xlink:role="http://xbrl.sec.gov/oef/role/SeriesOnly" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_S000103953Member_01a177ca-9ebc-73e0-936a-c3b2048ef273" xlink:href="ck0001040674-20261028.xsd#ck0001040674_S000103953Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain" xlink:to="loc_ck0001040674_S000103953Member_01a177ca-9ebc-73e0-936a-c3b2048ef273" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ClassOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#ClassOnly"/>
  <link:definitionLink xlink:role="http://xbrl.sec.gov/oef/role/ClassOnly" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_oef_ShareClassDomain" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_ShareClassDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_C000274551Member_01a177d3-d512-70cd-af53-7cf60899b6f3" xlink:href="ck0001040674-20261028.xsd#ck0001040674_C000274551Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_ShareClassDomain" xlink:to="loc_ck0001040674_C000274551Member_01a177d3-d512-70cd-af53-7cf60899b6f3" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/RiskOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#RiskOnly"/>
  <link:definitionLink xlink:role="http://xbrl.sec.gov/rr/role/RiskOnly" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_oef_AllRisksMember" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_AllRisksMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_EquityMarketRiskMember_01a177df-e49d-777e-90f3-c1ecb21f3372" xlink:href="ck0001040674-20261028.xsd#ck0001040674_EquityMarketRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001040674_EquityMarketRiskMember_01a177df-e49d-777e-90f3-c1ecb21f3372" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_ETFRisksMember_01a177e0-9cad-7ffa-bfbc-22bc37348842" xlink:href="ck0001040674-20261028.xsd#ck0001040674_ETFRisksMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001040674_ETFRisksMember_01a177e0-9cad-7ffa-bfbc-22bc37348842" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_ETFRisksAuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember_01a177e1-824c-73a9-a5bd-aa67cafe6282" xlink:href="ck0001040674-20261028.xsd#ck0001040674_ETFRisksAuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001040674_ETFRisksAuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember_01a177e1-824c-73a9-a5bd-aa67cafe6282" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_ETFRisksCostsOfBuyingOrSellingSharesMember_01a177e2-0a01-7bb9-90fb-dde5cb5ad3ac" xlink:href="ck0001040674-20261028.xsd#ck0001040674_ETFRisksCostsOfBuyingOrSellingSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001040674_ETFRisksCostsOfBuyingOrSellingSharesMember_01a177e2-0a01-7bb9-90fb-dde5cb5ad3ac" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_ETFRisksSharesMayTradeAtPricesOtherThanNAVMember_01a177e2-a8eb-7661-ae70-8cbb82ea9060" xlink:href="ck0001040674-20261028.xsd#ck0001040674_ETFRisksSharesMayTradeAtPricesOtherThanNAVMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001040674_ETFRisksSharesMayTradeAtPricesOtherThanNAVMember_01a177e2-a8eb-7661-ae70-8cbb82ea9060" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_ETFRisksTradingMember_01a177e3-17ae-7a8b-870d-031f3aaef552" xlink:href="ck0001040674-20261028.xsd#ck0001040674_ETFRisksTradingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001040674_ETFRisksTradingMember_01a177e3-17ae-7a8b-870d-031f3aaef552" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_IndustryConcentrationRiskMember_01a177e3-e09b-78e1-95e2-12e850cc500f" xlink:href="ck0001040674-20261028.xsd#ck0001040674_IndustryConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001040674_IndustryConcentrationRiskMember_01a177e3-e09b-78e1-95e2-12e850cc500f" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_MidCapCompaniesRiskMember_01a177e4-325f-7e38-b809-feb586b83c18" xlink:href="ck0001040674-20261028.xsd#ck0001040674_MidCapCompaniesRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001040674_MidCapCompaniesRiskMember_01a177e4-325f-7e38-b809-feb586b83c18" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_ModelsAndDataRiskMember_01a177e4-8fd3-786e-88a7-e0bcc95ad17b" xlink:href="ck0001040674-20261028.xsd#ck0001040674_ModelsAndDataRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001040674_ModelsAndDataRiskMember_01a177e4-8fd3-786e-88a7-e0bcc95ad17b" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_NonFinancialFactorsRiskMember_01a177e4-e308-7f90-8367-e7e7e62fd7c9" xlink:href="ck0001040674-20261028.xsd#ck0001040674_NonFinancialFactorsRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001040674_NonFinancialFactorsRiskMember_01a177e4-e308-7f90-8367-e7e7e62fd7c9" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_PassiveInvestmentRiskMember_01a177e5-c1e7-767c-b523-48b5304ab633" xlink:href="ck0001040674-20261028.xsd#ck0001040674_PassiveInvestmentRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001040674_PassiveInvestmentRiskMember_01a177e5-c1e7-767c-b523-48b5304ab633" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_REITInvestmentRiskMember_01a177e6-b76f-7457-a29c-b8bcfadd7c6f" xlink:href="ck0001040674-20261028.xsd#ck0001040674_REITInvestmentRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001040674_REITInvestmentRiskMember_01a177e6-b76f-7457-a29c-b8bcfadd7c6f" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_SectorRiskMember_01a177e7-2ee7-7f0d-8591-d5c956cacafb" xlink:href="ck0001040674-20261028.xsd#ck0001040674_SectorRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001040674_SectorRiskMember_01a177e7-2ee7-7f0d-8591-d5c956cacafb" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_SectorRiskEnergySectorRiskMember_01a177e7-ade4-7094-a7fd-41275b5db429" xlink:href="ck0001040674-20261028.xsd#ck0001040674_SectorRiskEnergySectorRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001040674_SectorRiskEnergySectorRiskMember_01a177e7-ade4-7094-a7fd-41275b5db429" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_SectorRiskFinancialsSectorRiskMember_01a177e8-2ebf-7180-a5e9-65c1bf6139eb" xlink:href="ck0001040674-20261028.xsd#ck0001040674_SectorRiskFinancialsSectorRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001040674_SectorRiskFinancialsSectorRiskMember_01a177e8-2ebf-7180-a5e9-65c1bf6139eb" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_SectorRiskIndustrialsSectorRiskMember_01a177e8-b70f-72c7-bf04-13e8bb04416f" xlink:href="ck0001040674-20261028.xsd#ck0001040674_SectorRiskIndustrialsSectorRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001040674_SectorRiskIndustrialsSectorRiskMember_01a177e8-b70f-72c7-bf04-13e8bb04416f" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_TrackingErrorRiskMember_01a177e9-2238-71cc-a6d0-48b75232e8fa" xlink:href="ck0001040674-20261028.xsd#ck0001040674_TrackingErrorRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001040674_TrackingErrorRiskMember_01a177e9-2238-71cc-a6d0-48b75232e8fa" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_RecentMarketEventsRiskMember_01a177e9-9e5d-76a0-9c82-a50bc970d68d" xlink:href="ck0001040674-20261028.xsd#ck0001040674_RecentMarketEventsRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_AllRisksMember" xlink:to="loc_ck0001040674_RecentMarketEventsRiskMember_01a177e9-9e5d-76a0-9c82-a50bc970d68d" xlink:type="arc" order="26"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/PerformanceMeasureOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#PerformanceMeasureOnly"/>
  <link:definitionLink xlink:role="http://xbrl.sec.gov/rr/role/PerformanceMeasureOnly" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_oef_PerformanceMeasureDomain" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_PerformanceMeasureDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_PointBridgeAmericaFirstIndex1ReflectsNoDeductionForFeesExpensesOrTaxesIndexMember_01a1791d-502b-7aad-b6b6-d6c9717a2657" xlink:href="ck0001040674-20261028.xsd#ck0001040674_PointBridgeAmericaFirstIndex1ReflectsNoDeductionForFeesExpensesOrTaxesIndexMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_PerformanceMeasureDomain" xlink:to="loc_ck0001040674_PointBridgeAmericaFirstIndex1ReflectsNoDeductionForFeesExpensesOrTaxesIndexMember_01a1791d-502b-7aad-b6b6-d6c9717a2657" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001040674_SP500IndexReflectsNoDeductionForFeesExpensesOrTaxesIndexMember_01a1791e-4f43-714f-909a-e924ca4f9067" xlink:href="ck0001040674-20261028.xsd#ck0001040674_SP500IndexReflectsNoDeductionForFeesExpensesOrTaxesIndexMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oef_PerformanceMeasureDomain" xlink:to="loc_ck0001040674_SP500IndexReflectsNoDeductionForFeesExpensesOrTaxesIndexMember_01a1791e-4f43-714f-909a-e924ca4f9067" xlink:type="arc" order="4"/>
  </link:definitionLink>
</link:linkbase>
