<?xml version="1.0" encoding="US-ASCII"?>
<!-- Generated by Broadridge Transform (tm) - http://www.broadridge.com -->
<!-- Created: Mon Oct 26 15:08:53 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/oef/2026/oef-2026.xsd#SeriesOnly" roleURI="http://xbrl.sec.gov/oef/role/SeriesOnly"/>
  <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/oef/role/SeriesOnly" xlink:type="extended">
    <loc xlink:type="locator" xlink:label="dei_EntityDomain" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <loc xlink:type="locator" xlink:label="ck0000916622_S000006387Member" xlink:href="ck0000916622-20261102.xsd#ck0000916622_S000006387Member"/>
<!-- [WMV7][qiglntNTe6cYXAwrRSokK54zTm4aDS9sy4jkhUoz4pOoJsUW9uIRb4B90ofWDSFA6DoSejIMzBSIXhVM0OwV1RfDsIxC4VqdgExFP4WAPEiTYfZX6yjLhWd3zPnGO9w2ZDpXPjQG7BnvDMV8cv01NpuouWhZaK8Ze9Ig5qpvgVXWXprL3AXEZ787hz4is3UiG2bBsLsW8q2/80O0YkDLQnHkEMLPSwPj5L3nDbFBtz7Oz+TlvrJEOKaKyBACIIZjWTuOaoYfi5SZfjfO2onmgWhnM2WIyon2VlvlubFM0Jy4sAC8wbPlr1uJOYIaZTPAVASIY4KyxkG9iJ37Q9WSb8mbQ+hBYomQgUEc4PKUO4i9M9WzFclY5XTp7GLu+7HczdsLraTt] CSR-->
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="ck0000916622_S000006387Member" order="11" xbrldt:closed="true"/>
  </definitionLink>
</linkbase>
