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The Collaborative International Dictionary of English v.0.48 (gcide)

Calcination \Cal`ci*na"tion\ (k[a^]l`s[i^]*n[=a]"sh[u^]n), n.
[F. calcination.]
[1913 Webster]
1. (Chem.) 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.
[1913 Webster]

2. The act or process of reducing a metal to an oxide or
metallic calx; oxidation.
[1913 Webster]