/ Dictionary / Index P propylic: Meaning and Definition of Find definitions for: pro•pyl•ic Pronunciation: (prō-pil'ik), [key] — adj. of, pertaining to, or characteristic of the propyl group. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. propylhexedrine propylite Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language