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[dih-fraw-ster, -fros-ter] /dɪˈfrɔ stər, -ˈfrɒs tər/
a person or thing that defrosts.
Also called defogger; especially British, demister. a device for melting frost, ice, or condensation on a windshield or other window of an automobile, airplane, etc., by warming the window.
Origin of defroster
1925-30; defrost + -er1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for defroster
  • For one thing, in the first couple of minutes, there is basically no heat coming from the defroster: it is not melting anything.
  • Turn on your windshield wipers, low-beam headlights, and defroster.
  • Warm up the car so the defroster has a chance to clear the windows.
  • Turn on your windshield wipers, headlights, and defroster.
  • Use the car defroster and a clean cloth to keep the windows free of fog.
  • Make sure your heater and defroster are in good working order.
  • defroster-A foggy windshield in cold weather results in limited visibility.
  • Check battery, exhaust system, heater and defroster.
British Dictionary definitions for defroster


a device by which the de-icing process of a refrigerator is accelerated, usually by circulating the refrigerant without the expansion process
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
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