The Collaborative International Dictionary of English v.0.48:

Calcine \Cal*cine"\, v. i. [imp. & p. p. Calciden; p. pr. &
   vb. n. Calcining.] [F. calciner, fr. L. calx, calcis, lime.
   See Calx.]
   [1913 Webster]
   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.
      [1913 Webster]

   2. To oxidize, as a metal by the action of heat; to reduce to
      a metallic calx.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Calcine \Cal*cine"\, v. i.
   To be converted into a powder or friable substance, or into a
   calx, by the action of heat. "Calcining without fusion"
   --Newton.
   [1913 Webster]

WordNet (r) 3.0 (2006):

calcine
    v 1: heat a substance so that it oxidizes or reduces