plaster of paris

plaster of paris
plaster of par·is -'par-əs n a white powdery slightly hydrated calcium sulfate CaSO4·1/2H2O or 2CaSO4·H2O that is made by calcining gypsum, forms a quick-setting paste with water, and is used in medicine chiefly in casts and for surgical bandages

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calcium sulfate hemihydrate reduced to a fine powder; the addition of water produces a porous mass that hardens rapidly. It has been used extensively in making casts and bandages to support or immobilize body parts, and in dentistry for making study models.

Medical dictionary. 2011.

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  • Plaster of Paris — Plaster Plas ter, n. [AS., a plaster (in sense 1), fr. L. emplastrum, Gr. ?, ?, fr. ? to daub on, stuff in; ? in + ? to mold: cf. OF. plastre a plaster (in sense 2), F. pl[^a]tre. Cf. {Plastic}, {Emplaster}, {Piaster}.] [Formerly written also… …   The Collaborative International Dictionary of English

  • plaster of Paris — mid 15c.; originally it was made from the extensive gypsum deposits of Montmartre in Paris …   Etymology dictionary

  • plaster of Paris — n. [from use of gypsum from Montmartre in PARIS2 in its manufacture] a heavy white powder, calcined gypsum, which, when mixed with water, forms a thick paste that sets quickly: used for casts, moldings, statuary, etc …   English World dictionary

  • plaster of Paris — calcined gypsum in white, powdery form, used as a base for gypsum plasters, as an additive of lime plasters, and as a material for making fine and ornamental casts: characterized by its ability to set rapidly when mixed with water. Also, plaster… …   Universalium

  • plaster of Paris — [[t]plɑ͟ːstər əv pæ̱rɪs, plæ̱s [/t]] N UNCOUNT Plaster of Paris is a type of plaster made from white powder and water which dries quickly. It is used to make plaster casts …   English dictionary

  • plaster of Paris — Most of the houses in France are made of plaster of Paris …   English expressions

  • Plaster of Paris bandage — Plaster Plas ter, n. [AS., a plaster (in sense 1), fr. L. emplastrum, Gr. ?, ?, fr. ? to daub on, stuff in; ? in + ? to mold: cf. OF. plastre a plaster (in sense 2), F. pl[^a]tre. Cf. {Plastic}, {Emplaster}, {Piaster}.] [Formerly written also… …   The Collaborative International Dictionary of English

  • plaster of Paris — plaster of Par|is [ˌpla:stər əv ˈpærıs US ˌplæs ] n [U] a mixture of a white powder and water that dries fairly quickly and is used for making plaster casts and to decorate buildings …   Dictionary of contemporary English

  • plaster-of-Paris disease — atrophy of a limb that has been enclosed in a plaster of Paris splint …   Medical dictionary

  • plaster-of-Paris jacket — a casing of plaster of Paris enveloping the body for the purpose of correcting deformities …   Medical dictionary

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