'Kyanite' definitions:

Definition of 'kyanite'

(from WordNet)
noun
A grey or greenish-blue mineral consisting of aluminum silicate in crystalline form; occurs in metaphoric rock, used as a refractory [syn: kyanite, cyanite]

Definition of 'Kyanite'

From: GCIDE
  • Kyanite \Ky"a*nite\, n. See Cyanite. [1913 Webster]

Definition of 'kyanite'

From: GCIDE
  • Cyanite \Cy"a*nite\ (-n?t), n. [See Cyanic.] (Min.) A mineral occuring in thin-bladed crystals and crystalline aggregates, of a sky-blue color. It is a silicate of aluminium. [Written also kyanite.] [1913 Webster] cyanobacterium