Webster's Revised Unabridged Dictionary (1913)

Webster's Revised Unabridged Dictionary (1913 + 1828)

Displaying 1 result(s) from the 1913 edition:

Acephala (Page: 14)

A*ceph"a*la (#), n. pl. [NL., fr. Gr. , adj. neut. pl., headless. See Acephal.] (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.