/ Dictionary / Index M meclizine: Meaning and Definition of Find definitions for: mec•li•zine Pronunciation: (mek'lu-zēn"), [key] — n. Pharm. a compound, CHClN, used for preventing nausea of motion sickness, pregnancy, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: meclizine (Thesaurus) Mecklenburg–Western Pomerania mecometer Related Content Daily Word Quiz: pugilist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language