释义 |
plaster of paris Usage: often capitalized 2d P Etymology: Middle English; from its originating in Paris, France 1. : a fine white powder consisting essentially of the hemihydrate of calcium sulfate CaSO4. 1/2H20 or 2CaSO4.H20 that is made by calcining gypsum until it is partially dehydrated, that forms with water a paste which soon sets, and that is used chiefly for casts and molds, building materials (as plasters, tile, blocks, moldings, and stuccowork), and for surgical bandages — called also calcined gypsum 2. : native gypsum |