/ Dictionary / Index C clypeus: Meaning and Definition of Find definitions for: clyp•e•us Pronunciation: (klip'ē-us), [key] — pl. clyp•e•i the area of the facial wall of an insect's head between the labrum and the frons, usually separated from the latter by a groove. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: clypeus (Thesaurus) clypeate clysis Related Content Daily Word Quiz: eccentric Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language