Plaster of Paris

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 {plaister}.] 1. (Med.) An external application of a consistency harder than ointment, prepared for use by spreading it on linen, leather, silk, or other material. It is adhesive at the ordinary temperature of the body, and is used, according to its composition, to produce a medicinal effect, to bind parts together, etc.; as, a porous plaster; sticking plaster. [1913 Webster]

2. A composition of lime, water, and sand, with or without hair as a bond, for coating walls, ceilings, and partitions of houses. See {Mortar}. [1913 Webster]

3. Calcined gypsum, or plaster of Paris, especially when ground, as used for making ornaments, figures, moldings, etc.; or calcined gypsum used as a fertilizer. [1913 Webster]

{Plaster cast}, a copy of an object obtained by pouring plaster of Paris mixed with water into a mold.

{Plaster of Paris}. [So called because originally brought from a suburb of Paris.] (Chem.) Anhydrous calcium sulphate, or calcined gypsum, which forms with water a paste which soon sets or hardens, and is used for casts, moldings, etc. The term is loosely applied to any plaster stone or species of gypsum.

{Plaster of Paris bandage} (Surg.), a bandage saturated with a paste of plaster of Paris, which on drying forms a perfectly fitting splint.

{Plaster stone}, any species of gypsum. See {Gypsum}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • 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 — 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 * …   Medical dictionary

  • 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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