英语词汇“gypsum”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	gypsum
释义	Word Frequency gypsum (ˈdʒɪpsəm) noun a colourless or white mineral sometimes tinted by impurities, found in beds as an evaporite. It is used in the manufacture of plaster of Paris, cement, paint, school chalk, glass, and fertilizer. Composition: hydrated calcium sulphate. Formula: CaSO4.2H2O. Crystal structure: monoclinic Derived forms gypseous (ˈdʒɪpsɪəs) adjective gypsiferous (dʒɪpˈsɪfərəs) adjective Word origin C17: from Latin, from Greek gupsos chalk, plaster, cement, of Semitic origin
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