acephala Meaning, Definition & Usage

A*ceph"a*la noun plural

Etymology

NL., fr. Gr. , adj. neut. pl., headless. See Acephal.

Definitions

1. (Zoöl.) That division of the Mollusca which includes the bivalve shells, like the clams and oysters; -- so called because they have no evident head. Formerly the group included the Tunicata, Brachiopoda, and sometimes the Bryozoa. See Mollusca.