/ Dictionary / Index P promazine: Meaning and Definition of Find definitions for: pro•ma•zine Pronunciation: (prō'mu-zēn"), [key] — n. Pharm. a compound, CHNS, used as a tranquilizer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. prom Prome Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language