/ Dictionary / Index P propoxur: Meaning and Definition of Find definitions for: pro•pox•ur Pronunciation: (prō-pok'sur), [key] — n. Chem. a crystalline compound, CHNO, used as a nonsystemic insecticide against a wide variety of insects. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. propound propoxyphene Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language