<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31343520</termId><termName>chromium</termName><termType>PT</termType><termNote><![CDATA[ Pure metallic element having symbol Cr and atomic number 24; an extremely hard, silvery white metal with a bluish tinge. Use also for the metal as processed and formed, usually in combination with other substances, to make various objects and materials, notably stainless steel, heat-resistant alloy, high-strength alloy steel, and for wear-resistant electroplating.  ]]></termNote><termCreatedDate>2026-03-30 20:32:38</termCreatedDate><relation><relationType>UF</relationType><termId>31343521</termId><termName>Cr</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31343522</termId><termName>chrome</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31412114</termId><termName>chromium and chromium alloys</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>31319740</termId><termName>elements</termName><termType>PT</termType></relation></term>  </Zthes>