| NOUN | substance | plaster of Paris, plaster | any of several gypsum cements |
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| Meaning | 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. | |
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| Synonym | plaster | |
| Narrower | gesso | gypsum or plaster of Paris spread on a surface to make it suitable for painting or gilding (or a surface so prepared) |
| Broader | calcium sulphate, calcium sulfate | A white salt (CaSO4) |
| Substances | gypsum | A common white or colorless mineral (hydrated calcium sulphate) used to make cements and plasters / plasters (especially plaster of Paris) |
| Spanish | yeso blanco | |
| Catalan | guix | |
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