Acephala
Pronunciation : A*ceph"a*la
Part of Speech : n. pl.
Etymology : [NL., fr. Gr. Acephal.] (Zo?l.)
Definition : Defn: 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.
Source : Webster's Unabridged Dictionary, 1913
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