(mineralogy) a very widely distributed crystalline form of calcium carbonate, CaCO₃, found as limestone, chalk and marble

(inorganic chemistry) A black, solid, of formula CaC₂, manufactured from lime and carbon at high temperatures; reacts with water to form acetylene.

The process of calcining: heating a substance to a high temperature, but below its melting point, to bring about thermal decomposition.

(transitive) To make something hard and stony by impregnating with calcium salts. / (intransitive) To become hard and stony by impregnation with calcium salts.

(alchemy, historical) To heat (a substance) to remove its impurities and refine it.

Something calcined; also, material left over after burning or roasting.

Vitamin D₃ (C₂₇H₄₄O)

Yielding or containing calcium, calcium carbonate or calcite.

A form of whitewash (inexpensive white paint) made from calcium carbonate, glue and water, used to coat wooden or plaster surfaces.

To coat with this substance.