'Cephalata' definitions:

Definition of 'Cephalata'

From: GCIDE
  • Cephalata \Ceph`a*la"ta\, n. pl. [NL., fr. Gr. kefalh` head.] (Zool.) A large division of Mollusca, including all except the bivalves; -- so called because the head is distinctly developed. See Illustration in Appendix. [1913 Webster]