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gypsum

(jip′səm)

noun

a very soft, monoclinic mineral, CaSO·2HO, commonly found with other evaporites in sedimentary rock and used to make plaster of Paris and cement; hydrous calcium sulfate

Origin: ME < L < Gr gypsos, chalk, gypsum < Sem

See gypsum in American Heritage Dictionary 4

noun

A widespread colorless, white, or yellowish mineral, CaSO₄·2H₂O, used in the manufacture of plaster of Paris, various plaster products, and fertilizers.

Origin:

Origin: Middle English gipsum

Origin: , from Latin gypsum

Origin: , from Greek gupsos

Origin: , probably of Semitic origin

Origin: ; akin to Arabic jibs, jiṣṣ, jaṣṣ

Origin: , from Akkadian gaṣṣu

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