/ Dictionary / Index F folic acid: Meaning and Definition of Find definitions for: fo'lic ac'id Pronunciation: [key] — Biochem. Biochem. a water-soluble vitamin that is converted to a coenzyme essential to purine and thymine biosynthesis: deficiency causes a form of anemia. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. folic folie* Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language