/ Dictionary / Index P pneumono-: Meaning and Definition of Find definitions for: pneumono- Pronunciation: [key] a combining form meaning “lung,” used in the formation of compound words: pneumonoconiosis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pneumonitis pneumonoconiosis 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