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  1  definition  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Diaspore  \Di"a*spore\,  n.  [From  Gr  ?  a  scattering;  dia` 
  through  asunder  +  ?  to  sow,  scatter  like  seed:  cf  F. 
  diaspore.]  (Min.) 
  A  hydrate  of  alumina,  often  occurring  in  white  lamellar 
  masses  with  brilliant  pearly  luster;  --  so  named  on  account 
  of  its  decrepitating  when  heated  before  the  blowpipe.