/ Dictionary / Index R refrigerant: Meaning and Definition of Find definitions for: re•frig•er•ant Pronunciation: (ri-frij'ur-unt), [key] — adj. refrigerating; cooling. reducing bodily heat or fever. —n. a refrigerant agent, as a drug. a liquid capable of vaporizing at a low temperature, as ammonia, used in mechanical refrigeration. a cooling substance, as ice or solid carbon dioxide, used in a refrigerator. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: refrigerant (Thesaurus) refrig. refrigerate Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language