Abranchiata
A`bran`chi`a´ta
n. pl. | 1. | (Zool.) A group of annelids, so called because the species composing it have no special organs of respiration. |
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
n. pl. | 1. | (Zool.) A group of annelids, so called because the species composing it have no special organs of respiration. |