/ Dictionary / Index C cyc: Meaning and Definition of Find definitions for: cyc Pronunciation: (sīk), [key] — n. Informal. cyclorama (def. 2). CYC Pronunciation: [key] cyclophosphamide. cyc. Pronunciation: [key] cyclopedia. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cyborg cycad Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language