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atresia

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atresia


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Atresia  \A*tre"si*a\,  n.  [NL.,  fr  Gr  ?  not  perforated.]  (Med.) 
  Absence  or  closure  of  a  natural  passage  or  channel  of  the 
  body;  imperforation. 
 
  From  WordNet  r  1.6  [wn]: 
 
  atresia 
  n  :  an  abnormal  condition  in  which  a  normal  opening  or  tube  in 
  the  body  (as  the  urethra)  is  closed  or  absent 




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