Cyclostomi

1 definition found

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

  Cyclostomi \Cy*clos"to*mi\ (s?-kl?s"t?-m?), n. pl. [NL. See
     {Cyclostomata}.] (Zool.)
     A glass of fishes having a suckerlike mouth, without jaws, as
     the lamprey; the Marsipobranchii.
     [1913 Webster]