单词 | talc |
释义 | Word Frequency talc(tælk) noun also: talcum 1. talcum powder 2. a white, grey, brown, or pale green mineral, found in metamorphic rocks. It is used in the manufacture of talcum powder and electrical insulators. Composition: hydrated magnesium silicate. Formula: Mg3 Si4O10(OH)2. Crystal structure: monoclinic verbWord forms: talcs, talcking, talcked, talcs, talcing or talced 3. (transitive) to apply talc to Derived forms talcose (ˈtalcose) or talcous (ˈtalcous) adjective Word origin C16: from Medieval Latin talcum, from Arabic talq mica, from Persian talk |
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