In zoology: In Haeckel's classification, several molluscous or soft-bodied animals, made up of the snails (Cochlides) and cuttles (Cephalopoda): one of his true two main divisions of Mollusca, the other being Acephala, or the brachiopods and lamellibranchs.
As employed by E. R. Lankester, a prime division or branch for the Mollusca, represented by two series, Lipoglossa and Echinoglossa, as together contrasted with Lipocephala. The Encephala in this feeling support the gastropods, cephalopods, pteropods, also types.
a team of mollusks including those which have a head. Synonymous with Cephalata or Cephalophora (which see): distinguished from Acephala.