Zygobranchia

1 definition found

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

  Zygobranchia \Zyg`o*bran"chi*a\, n. pl. [NL., from Gr. zygo`n a
     yoke + ? a gill.] (Zool.)
     A division of marine gastropods in which the gills are
     developed on both sides of the body and the renal organs are
     also paired. The abalone ({Haliotis}) and the keyhole limpet
     ({Fissurella}) are examples.


     [1913 Webster]