Definitions for: Zygobranchia

Webster (1913) Definition: Zyg`o*bran"chi*a, n. pl. [NL., from Gr. ? a yoke
+ ? a gill.] (Zo["o]l.)
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.