<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31319729</termId><termName>ice</termName><termType>PT</termType><termNote><![CDATA[ Any of various frozen or solidified forms of substances (including water) that are liquid, gaseous, or volatile under normal conditions on earth; the term is used particularly in astronomy for such materials, which are present in the nuclei of comets, in planets, and in other celestial objects.Often used with a modifying word specifying the substance, such as ammonia ice, methane ice, water ice, etc.  ]]></termNote><termCreatedDate>2026-03-30 20:26:09</termCreatedDate><relation><relationType>UF</relationType><termId>31319730</termId><termName>ices</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31305816</termId><termName>materials by physical state</termName><termType>PT</termType></relation></term>  </Zthes>