/ Dictionary / Index P postnasal: Meaning and Definition of Find definitions for: post•na•sal Pronunciation: (pōst'nā'zul), [key] — adj. located or occurring behind the nose or in the nasopharynx, as a flow of mucus; nasopharyngeal: a postnasal infection. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. postmortem postnasal drip Related Content Daily Word Quiz: dispel Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language