Cyclostomata

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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.] (Zool.)
     A division of Bryozoa, in which the cells have circular
     apertures.
     [1913 Webster] Cyclostome



From WordNet (r) 2.0 [wn]:

  Cyclostomata
       n : primitive jawless aquatic vertebrate: lampreys; hagfishes
           [syn: {order Cyclostomata}]