/ Dictionary / Index D defrost: Meaning and Definition of Find definitions for: de•frost Pronunciation: (di-frôst', -frost'), [key] — v.t. to remove the frost or ice from: to defrost a refrigerator; to defrost the windshield of a car. to thaw or partially thaw (frozen food). —v.i. to become free of ice or frost: The refrigerator defrosted quickly. to thaw, as frozen food: The meat took two hours to defrost. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: defrost (Thesaurus) defrock defroster Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language