• Webster's Revised Unabridged Dictionary
    • n. pl Cephalata (Zoöl) A large division of Mollusca, including all except the bivalves; -- so called because the head is distinctly developed. See Illustration in Appendix.
    • ***
Century Dictionary and Cyclopedia
    • cephalata A prime division of mollusks, including those with a head, generally provided with tentacles, eyes, and a mouth armed with jaws, as gastropods, pteropods, and cephalopods: same as Cephalophora, 1, or Encephala: the opposite of Acephala.
    • ***


Webster's Revised Unabridged Dictionary
NL., fr. Gr. kefalh` head