/ Dictionary / Index P propyl alcohol: Meaning and Definition of Find definitions for: pro'pyl al'cohol Pronunciation: [key] — Chem. Chem. a colorless, water-soluble liquid, CHO, used chiefly in organic synthesis and as a solvent. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. propylaeum propyl aldehyde Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language