Adjacent Words

gypsum definitions

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WordNet (r) 3.0 (2005)

n
1: a common white or colorless mineral (hydrated calcium sulphate) used to make cements and plasters (especially plaster of Paris)

Merriam Webster's

noun Etymology: Latin, from Greek gypsos Date: 14th century 1. a widely distributed mineral consisting of hydrous calcium sulfate that is used especially as a soil amendment and in making plaster of paris 2. drywall

Oxford Reference Dictionary

n. a hydrated form of calcium sulphate occurring naturally and used to make plaster of Paris and in the building industry. Derivatives: gypseous adj. gypsiferous adj. Etymology: L f. Gk gupsos

Webster's 1913 Dictionary

Gypsum Gyp"sum, n. [L. gypsum, Gr. ?; cf. Ar. jibs plaster, mortar, Per. jabs?n lime.] (Min.) A mineral consisting of the hydrous sulphate of lime (calcium). When calcined, it forms plaster of Paris. Selenite is a transparent, crystalline variety; alabaster, a fine, white, massive variety.

Collin's Cobuild Dictionary

Gypsum is a soft white substance which looks like chalk and which is used to make plaster of Paris.

Soule's Dictionary of English Synonyms

n. Sulphate of lime (native).