Polybranchia

1 definition found

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

  Polybranchia \Pol`y*bran"chi*a\, n. pl. [NL. See {Poly-}, and
     {Branchia}.] (Zool.)
     A division of Nudibranchiata including those which have
     numerous branchi[ae] on the back.
     [1913 Webster]