/ Dictionary / Index A antifreeze: Meaning and Definition of Find definitions for: an•ti•freeze Pronunciation: (an'ti-frēz", an'tē-), [key] — n. a liquid used in the radiator of an internal-combustion engine to lower the freezing point of the cooling medium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: antifreeze (Thesaurus) antifouling paint antifriction Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language