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  1  definition  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Cyclostomata  \Cy`clo*stom"a*ta\  (s?`kl?-st?m"?-t?),  Cyclostoma 
  \Cy*clos"to*ma\  (s?-kl?s"t?-m?),  n.  pl  [NL.,  fr  Gr  ky`klos 
  circle  +  sto`ma,  -atos  mouth.]  (Zo["o]l.) 
  A  division  of  Bryozoa,  in  which  the  cells  have  circular