Calcine /(?)/

imp. & p. p. Calciden; p. pr. & vb. n. Calcining

1. To reduce to a powder, or to a friable state, by the action of heat; to expel volatile matter from by means of heat, as carbonic acid from limestone, and thus (usually) to produce disintegration; as to, calcine bones.
2. To oxidize, as a metal by the action of heat; to reduce to a metallic calx.

1. To be converted into a powder or friable substance, or into a calx, by the action of heat.