/ Dictionary / Index C CEO: Meaning and Definition of Find definitions for: CEO Pronunciation: [key] chief executive officer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ceo (Thesaurus) century plant ceorl Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language