plaster of Paris

Definitions of plaster of Paris
  1. noun
    any of several gypsum cements; a white powder (a form of calcium sulphate) that forms a paste when mixed with water and hardens into a solid; used in making molds and sculptures and casts for broken limbs
    synonyms: plaster
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    types:
    gesso
    gypsum or plaster of Paris spread on a surface to make it suitable for painting or gilding (or a surface so prepared)
    type of:
    calcium sulfate, calcium sulphate
    a white salt (CaSO4)
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