Gypsum meaning

jĭpsəm
A widespread colorless, white, or yellowish mineral, CaSO4 · 2H2 O, used in the manufacture of plaster of Paris, various plaster products, and fertilizers.
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A very soft, monoclinic mineral, CaSO42H2O, commonly found with other evaporites in sedimentary rock and used to make plaster of Paris and cement; hydrous calcium sulfate.
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A colorless, white, or pinkish mineral. Gypsum occurs as individual blade-shaped crystals or as massive beds in sedimentary rocks, especially those formed through the evaporation of saline-rich water. It is used in manufacturing plasterboard, cement, and fertilizers. Chemical formula: CaSO4·2H2O.
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A mineral consisting of the hydrated calcium sulphate. When calcined, it forms plaster of Paris.
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Origin of gypsum

  • Middle English gipsum from Latin gypsum from Greek gupsos probably of Semitic origin Arabic jibs, jiṭṭ, jaṭṭ from Akkadian gaṭṭu

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin gypsum, from Ancient Greek γύψος (gupsos).

    From Wiktionary