Mineral, kalcijum sulfat; stvrdnut u vodi upotrebljava se u građevinarstvu, vajarstvu, u industriji porculana i stakla, u hirurgiji i dr.; služi i kao đubriov (grč.)
Sadra, kalcijumov sulfat sa vodom, u vodi teško rastvorljiv.
A firm covering (often made of plaster of Paris) that immobilizes broken bones while they heal; SYN. plaster cast.
Plaster of Paris used in painting; prepared gypsum or plaster of Paris used in painting
In painting and gilding, an absorbent white ground made of a mixture of plaster and size (a gluey mixture). Traditionally, gesso was used as a preparatory base for panels and canvases, especially in tempera painting.
ETYM Latin gypsum, Greek gypsos; cf. Arabic jibs plaster, mortar, Per. jabsîn lime.
A common white or colorless mineral (hydrated calcium sulphate) used to make cements and plasters (especially plaster of Paris).
Common mineral, composed of hydrous calcium sulfate, CaSO4.2H2O. It ranks 2 on the Mohs’ scale of hardness. Gypsum is used for making casts and molds, and for blackboard chalk.
A fine-grained gypsum, called alabaster, is used for ornamental work. Burned gypsum is known as plaster of Paris, because for a long time it was obtained from the gypsum quarries of the Montmartre district of Paris.
ETYM AS., a plaster, from Latin emplastrum, Greek, to daub on, stuff in; en in + plassein to mold: cf. Old Fren. plastre a plaster, French plâtre. Related to Plastic, Emplaster, Piaster.
A mixture of lime or gypsum with sand and water; hardens into a smooth solid; used to cover walls and ceilings.