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<!-- Generated by Broadridge Transform (tm) - http://www.broadridge.com -->
<!-- Created: Fri Jul 10 18:48:42 UTC 2026 -->
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  <roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/vip/2026/vip-2026.xsd#PortfolioCompanyOnly" roleURI="http://xbrl.sec.gov/vip/role/PortfolioCompanyOnly"/>
  <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"/>
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  <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"/>
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  <definitionLink xlink:role="http://xbrl.sec.gov/vip/role/ContractOnly" xlink:type="extended">
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    <loc xlink:type="locator" xlink:label="cik0001048606_C000203524Member" xlink:href="cik0001048606-20260710.xsd#cik0001048606_C000203524Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="vip_AllContractsMember" xlink:to="cik0001048606_C000203524Member" order="1" xbrldt:closed="true"/>
  </definitionLink>
  <definitionLink xlink:role="http://xbrl.sec.gov/vip/role/PortfolioCompanyOnly" xlink:type="extended">
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    <loc xlink:type="locator" xlink:label="cik0001048606_CalamosUSEquityAutocallableVIPFundClassIIMember" xlink:href="cik0001048606-20260710.xsd#cik0001048606_CalamosUSEquityAutocallableVIPFundClassIIMember"/>
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