/ Dictionary / Index P pyruvic aldehyde: Meaning and Definition of Find definitions for: pyru'vic al'dehyde Pronunciation: (pī"roo-val'du-hīd", pir"oo-). [key] — Chem. Chem. a yellow, liquid compound, CHO, containing both an aldehyde and a ketone group, usually obtained in a polymeric form: used chiefly in organic synthesis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pyruvic acid Pythagoras Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language