单词	plaster of paris
释义	plaster of paris noun phrase plaster of par·​is -ˈper-əs  -ˈpa-rəs often capitalized second P : a white powdery slightly hydrated calcium sulfate CaSO4·¹/₂H2O or 2CaSO4·H2O made by calcining gypsum and used chiefly for casts and molds in the form of a quick-setting paste with water Word History Etymology Paris, France First Known Use 15th century, in the meaning defined above Kids Definition plaster of paris noun plaster of par·​is -ˈper-əs  often capitalized 2nd P : a white powder that mixes with water to form a paste that hardens quickly and is used for casts and molds Medical Definition plaster of paris noun plaster of par·​is -ˈpar-əs  : 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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