/ Dictionary / Index C cephalon: Meaning and Definition of Find definitions for: ceph•a•lon Pronunciation: (sef'u-lon", -lun), [key] — pl. -la the head, esp. of an arthropod. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cephalometry Cephalonia Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language