/ Dictionary / Index B butyric acid: Meaning and Definition of Find definitions for: butyr'ic ac'id Pronunciation: [key] — Chem. Chem. either of two isomeric acids having the formula CHO, esp. a rancid liquid occurring chiefly in spoiled butter, whose esters are used as flavorings. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. butyric butyrin Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language