/ Dictionary / Index A acetyl-coenzyme A: Meaning and Definition of Find definitions for: a•ce•tyl-co•en•zyme A Pronunciation: (u-sēt'l-kō-en'zīm, u-set'-, as'i-tl-), [key] — n. Biochem. the acetylated form of coenzyme A, formed as an intermediate in the oxidation of carbohydrates, fats, and protein in animal metabolism. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. acetylcholinesterase acetylcysteine Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language