/ Dictionary / Index P propene: Meaning and Definition of Find definitions for: pro•pene Pronunciation: (prō'pēn), [key] — n. Chem. propylene (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: propene (Thesaurus) propend propense Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language