Zygobranchia
Pronunciation : Zyg`o*bran"chi*a
Part of Speech : n.
Etymology : [NL., from Gr. (Zo?l.)
Definition : Defn: 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.
pl.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder