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The act or process of disintegrating a substance, or rendering it friable by the action of heat, esp. by the expulsion of some volatile matter, as when carbonic and acid is expelled from carbonate of calcium in the burning of limestone in order to make lime.

- Bone black (Chem.), the black, carbonaceous substance into which bones are converted by calcination in close vessels; -- called also animal charcoal. It is used as a decolorizing material in filtering sirups, extracts, etc., and as a black pigment. See Ivory black, under Black. -- Bone cave, a cave in which are foun…

A kind of oven, or reverberatory furnace, used for the calcination of sand and potash, and converting them into frit. Ure.

A vessel used in calcination.

The substance which remains when a metal or mineral has been subjected to calcination or combustion by heat, and which is, or may be, reduced to a fine powder.

The running together of the matter of an ore into a mass, when the ore is only heated for calcination.

To restore or reduce to its natural or metallic state; as, to revive a metal after calcination.