/ Dictionary / Index P pneumonic plague: Meaning and Definition of Find definitions for: pneumon'ic plague' Pronunciation: [key] — Pathol. Pathol. a form of plague characterized by lung involvement. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pneumonic pneumonitis Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language