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  1  definition  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Diopside  \Di*op"side\,  n.  [Gr.  di-  =  di`s-  twice  +  ?  a  sight, 
  fr  the  root  of  ?  I  shall  see:  cf  F.  diopside.]  (Min.) 
  A  crystallized  variety  of  pyroxene,  of  a  clear,  grayish  green 
  color;  mussite.