View synonyms for gypsum

gypsum

[ jip-suhm ]

Phonetic (Standard)IPA

noun

a very common mineral, hydrated calcium sulfate, CaSO 4 ⋅2H 2 O, occurring in crystals and in masses, soft enough to be scratched by the fingernail: used to make plaster of Paris, as an ornamental material, as a fertilizer, etc.

gypsum

/ ˈdʒɪpsəm; dʒɪpˈsɪfərəs; ˈdʒɪpsɪəs /

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: CaSO 4 .2H 2 O. Crystal structure: monoclinic

gypsum

/ jĭp′səm /

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: CaSO 4 ·2H 2 O.

Origin of gypsum¹

1640–50; < Latin: chalk < Greek gýpsos chalk, gypsum

Origin of gypsum¹

C17: from Latin, from Greek gupsos chalk, plaster, cement, of Semitic origin

Fracking, in this regard, is no different from gypsum mining, or some kinds of industrial agriculture.

The sand dunes were relentlessly mined in the past century; power lines and a gypsum plant split the park.

It is sometimes mixed with lime or gypsum, and dried with heat, and sometimes with animal charcoal or peat charcoal.

"There is an extensive underlying layer of gypsum, here," he said.

At the top there is a small aperture, which is hermetically closed with gypsum.

The difficulty of boiling them soft arises from an excess of gypsum imbibed during their growth.

The gypsum reposing on the mud is composed of plates in such close juxtaposition as to resemble an artificial pavement.

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