<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31361670</termId><termName>cirrus clouds</termName><termType>PT</termType><termNote><![CDATA[ Detached clouds in the form of white, delicate filaments, mostly white patches or narrow bands. They may have a fibrous (hair-like) and/or silky sheen appearance. Cirrus clouds are always composed of ice crystals, and their transparent character depends upon the degree of separation of the crystals. ]]></termNote><termCreatedDate>2026-03-30 20:37:35</termCreatedDate><relation><relationType>UF</relationType><termId>31361671</termId><termName>cirrus cloud</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31361672</termId><termName>clouds, cirrus</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31327381</termId><termName>clouds</termName><termType>PT</termType></relation></term>  </Zthes>