pygobranchia Meaning, Definition & Usage

Py`go*bran"chi*a noun plural
Etymology
NL., fr. Gr. pugh` the rump + a gill.
Definitions
  1. (Zoöl.) A division of opisthobranchiate mollusks having the branchiæ in a wreath or group around the anal opening, as in the genus Doris.

Webster 1913