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.
ZYGOBRANCHIATE
Zyg`o*bran"chi*ate, a. (Zoöl.)
Defn: Of or pertaining to the Zygobranchia.
ZYGODACTYL; ZYGODACTYLE
Zyg`o*dac"tyl, Zyg`o*dac"tyle, n. Etym: [See Zygodactylic.] (Zoöl.)
Defn: Any zygodactylous bird.
ZYGODACTYLAE
Zyg`o*dac"ty*læ, n. pl. Etym: [NL.] (Zoöl.)
Defn: The zygodactylous birds. In a restricted sense applied to a division of birds which includes the barbets, toucans, honey guides, and other related birds.
ZYGODACTYLI
Zyg`o*dac"ty*li, n. pl. Etym: [NL.] (Zoöl.)
Defn: Same as Scansores.
ZYGODACTYLIC; ZYGODACTYLOUS
Zyg`o*dac"ty*lic, Zyg`o*dac"tyl*ous, a. Etym: [Gr. zygodactyle.]
(Zoöl.)