Crystallite

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Crystallite \Crys"tal*lite\ (kr?s"tal-l?t), n. [See {Crystal}.]
     (Min.)
     A minute mineral form like those common in glassy volcanic
     rocks and some slags, not having a definite crystalline
     outline and not referable to any mineral species, but marking
     the first step in the crystallization process. According to


     their form crystallites are called {trichites}, {belonites},
     {globulites}, etc.
     [1913 Webster]

From WordNet (r) 2.0 [wn]:

  crystallite
       n : any of numerous minute rudimentary crystalline bodies of
           unknown composition found in glassy igneous rock