英语词汇“topaz”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	topaz
释义	Word Frequency topaz (ˈtəʊpæz) noun 1. a white or colourless mineral often tinted by impurities, found in cavities in igneous rocks and in quartz veins. It is used as a gemstone. Composition: hydrated aluminium silicate. Formula: Al2SiO4(F,OH)2. Crystal structure: orthorhombic 2. oriental topaz 3. false topaz 4. a. a yellowish-brown colour, as in some varieties of topaz b. (as adjective) topaz eyes 5. either of two South American hummingbirds, Topaza pyra and T. pella Word origin C13: from Old French topaze, from Latin topazus, from Greek topazos
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