/ Dictionary / Index D degrease: Meaning and Definition of Find definitions for: de•grease Pronunciation: (dē-grēs', -grēz'), [key] — -greased, -greas•ing. to remove grease, oil, or the like, from, esp. by treating with a chemical. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: degrease (Thesaurus) de gratia degree Related Content Daily Word Quiz: laudable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language