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cryptocrystalline


cryptocrystalline


  1  definition  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Cryptocrystalline  \Cryp`to*crys"tal*line\  (-kr?s"tal-l?n),  a. 
  [Gr.  krypto`s  hidden  +  E.  crystalline.]  (Geol.) 
  Indistinctly  crystalline;  --  applied  to  rocks  and  minerals, 
  whose  state  of  aggregation  is  so  fine  that  no  distinct 
  particles  are  visible,  even  under  the  microscope.