/ Dictionary / Index C chlorcyclizine: Meaning and Definition of Find definitions for: chlor•cy•cli•zine Pronunciation: (klôr-sī'klu-zēn", klōr-), [key] — n. Pharm. a substance, CHClN, used as an antihistamine in the symptomatic treatment of certain allergic disorders and in motion sickness. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. chlorate chlordane Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language