[ dih-frawst, -frost ]
See synonyms for defrost on
verb (used with object)
  1. to remove the frost or ice from: to defrost a refrigerator; to defrost the windshield of a car.

  2. to thaw or partially thaw (frozen food).

verb (used without object)
  1. to become free of ice or frost: The refrigerator defrosted quickly.

  2. to thaw, as frozen food: The meat took two hours to defrost.

Origin of defrost

First recorded in 1890–95; de- + frost

Words Nearby defrost Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use defrost in a sentence

British Dictionary definitions for defrost


/ (diːˈfrɒst) /

  1. to make or become free of frost or ice

  2. to thaw, esp through removal from a refrigerator

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012