Gypsum
['dʒɪpsəm]
Definition
(noun.) a common white or colorless mineral (hydrated calcium sulphate) used to make cements and plasters (especially plaster of Paris).
Typed by Chloe--From WordNet
Definition
(n.) 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.
Checker: Natalia
Synonyms and Synonymous
n. Sulphate of lime (native).
Inputed by Cathleen
Definition
n. a valuable mineral of a comparatively soft kind burned in kilns and afterwards ground to a fine powder called plaster of Paris.—adjs. Gyp′seous of or resembling gypsum; Gypsif′erous producing or containing gypsum.
Inputed by Jeanine
Examples
- The most common impurity is gypsum and it is necessary to remove this gypsum before the salt can be considered pure. Various. The Wonder Book of Knowledge.
- In about four hours he had found a strong solution of lime in the agate cup, and sulphuric acid in the cup of gypsum. Walter Libby. An Introduction to the History of Science.
- Among other lining materials found suitable were soapstone, alumina, ammonia, copperas, starch, Epsom salts, and gypsum, paper, pulp, and alum, and a mixture of various other materials. William Henry Doolittle. Inventions in the Century.
Typed by Clyde