/ Dictionary / Index C cyclizine: Meaning and Definition of Find definitions for: cy•cli•zine Pronunciation: (sī'klu-zēn"), [key] — n. Pharm. a substance, CHN, used primarily to prevent and treat motion sickness. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cyclize cyclo Related Content Daily Word Quiz: denizen Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language