aphanitic

from WordNet (r) 3.0 (2006)
aphanitic
    adj 1: of or relating to aphanite
    
from The Collaborative International Dictionary of English v.0.48
Aphanitic \Aph`a*nit"ic\, a. (Min.)
   Resembling aphanite; having a very fine-grained structure.
   [1913 Webster] Aphasia
    

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