/ Dictionary / Index F fatty acid: Meaning and Definition of Find definitions for: fat'ty ac'id Pronunciation: [key] — Biochem. Biochem. any of a class of aliphatic acids, esp. palmitic, stearic, or oleic acid, consisting of a long hydrocarbon chain ending in a carboxyl group that bonds to glycerol to form a fat. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. fatty fatty degeneration Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language