Hydrobranchiate

1 definition found

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

  Hydrobranchiata \Hy`dro*bran`chi*a"ta\, n. pl. [NL., fr. Gr.
     "y`dwr water + ? gills.] (Zool.)
     An extensive artificial division of gastropod mollusks,
     including those that breathe by gills, as contrasted with the
     Pulmonifera. -- {Hy`dro*bran"chi*ate}, a.
     [1913 Webster]