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  1  definition  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Aphasia  \A*pha"si*a\,  Aphasy  \Aph"a*sy\,  n.  [NL.  aphasia,  Gr  ?, 
  fr  ?  not  spoken;  'a  priv.  +  ?  to  speak:  cf  F.  aphasie.] 
  Loss  of  the  power  of  speech,  or  of  the  appropriate  use  of 
  words  the  vocal  organs  remaining  intact,  and  the 
  intelligence  being  preserved.  It  is  dependent  on  injury  or 
  disease  of  the  brain.