an·​ti·​freeze ˈan-ti-ˌfrēz How to pronounce antifreeze (audio)
: a substance added to a liquid (such as the water in an automobile engine) to lower its freezing point
: any of various substances (such as proteins or alcohols) that are found in some living organisms (such as certain fish and insects) and serve to lower the freezing point of body fluids especially by limiting ice crystal growth

Examples of antifreeze in a Sentence

Recent Examples on the Web But Jupiter has managed to whip up liquid water high up in its atmosphere, thanks to the presence of ammonia gas that acts as an antifreeze. Shi En Kim, Smithsonian Magazine, 22 May 2024 Items that will not be accepted are yard waste, tires, car batteries, used motor oil, antifreeze, herbicides, pesticides, paint, liquids of any kind, fluorescent bulbs and construction materials. Nwa Democrat-Gazette,, 9 Apr. 2024 The antifreeze was found two days after a dog was shot in the same neighborhood, Utica police said on Facebook. Kate Linderman, Kansas City Star, 21 Feb. 2024 The next morning, Vanessa was watching a show called Scare Tactics when Rodney went outside to check her car’s antifreeze. Molly Langmuir, Rolling Stone, 2 Feb. 2024 See all Example Sentences for antifreeze 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'antifreeze.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1903, in the meaning defined at sense 1

Time Traveler
The first known use of antifreeze was in 1903

Dictionary Entries Near antifreeze

Cite this Entry

“Antifreeze.” Dictionary, Merriam-Webster, Accessed 25 Jun. 2024.

Kids Definition


an·​ti·​freeze ˈant-i-ˌfrēz How to pronounce antifreeze (audio)
: a substance added to a liquid (as the water in an automobile radiator) to prevent freezing

More from Merriam-Webster on antifreeze

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!