[pohst-ney-zuh l]
  1. located or occurring behind the nose or in the nasopharynx, as a flow of mucus; nasopharyngeal: a postnasal infection.

Origin of postnasal

First recorded in 1895–1900; post- + nasal1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

postnasal in Medicine


  1. Located or occurring posterior to the nose or the nasal cavity.
  2. Relating to the posterior portion of the nasal cavity.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.