from the GNU version of the Collaborative International Dictionary of English
- n. 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.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. 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
Sorry, no etymologies found.