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Webster 1913 Edition
Zygobranchia
‖
Zygˊo-bran′chi-a
,Noun.
pl.
[NL., from Gr.
ζυγόν
a yoke + [GREEK] 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.