an·​ti·​freeze | \ ˈan-ti-ˌfrēz \

Definition of antifreeze

1 : a substance added to a liquid (such as the water in an automobile engine) to lower its freezing point
2 : 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

The startup, called Malta, uses separate vats of molten salt and antifreeze-like liquid to store electricity as thermal energy and dispatch it to the grid when it's needed. Megan Geuss, Ars Technica, "Using molten salt to store electricity isn’t just for solar thermal plants," 24 Dec. 2018 Forget the Céline clutch; the new accessory du jour is a square plastic bottle full of liquid in a shade of green only slightly less electric than antifreeze. Christine Lennon, Harper's BAZAAR, "The Hunger Games," 11 June 2012 The consumer-price index, which gauges what Americans pay for everything from garden gnomes to antifreeze, rose a seasonally adjusted 0.2% in August from the prior month, the Labor Department said in September. Daniel Kruger, WSJ, "Flattening Yield Curve Raises Caution Flag on Economy," 30 Sep. 2018 The drugs can have too much or too little of an active ingredient, be substandard or expired, or contain poisons and contaminants such as floor wax, mercury, boric acid, paint or antifreeze. Sumathi Reddy, WSJ, "The Uphill Fight Against Fake Prescription Drugs," 8 Oct. 2018 Antarctic fish produce antifreeze proteins that prevent their blood from freezing in subzero temperatures. Rachael Bay, CBS News, "Can this bird adapt to a warmer climate? Read the genes to find out," 29 May 2018 Antarctic fish produce antifreeze proteins that prevent their blood from freezing in subzero temperatures. Rachael Bay, Scientific American, "Can Yellow Warblers Adapt to a Warmer Climate?," 29 May 2018 His long-sleeved, button-down white dress shirt — the one that was mandated for male graduates — was covered in antifreeze. Amy B Wang, Washington Post, "A teen nearly missed his graduation because of antifreeze burns. Deputies stepped in to help.," 11 June 2018 Some call the frog urine a type of antifreeze, but study co-author Jon Costanzo, a zoologist at Miami University in Ohio, bristles at that term. Amy Lieu, Fox News, "Wood frogs' winter survival may depend on holding in urine: study," 2 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'antifreeze.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of antifreeze

1903, in the meaning defined at sense 1

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Statistics for antifreeze

Last Updated

3 Jan 2019

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Time Traveler for antifreeze

The first known use of antifreeze was in 1903

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More Definitions for antifreeze



English Language Learners Definition of antifreeze

: a substance that is added to the water in a vehicle's engine to prevent it from freezing


an·​ti·​freeze | \ ˈan-ti-ˌfrēz \

Kids Definition of antifreeze

: a substance added to the water in an automobile radiator to prevent its freezing

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More from Merriam-Webster on antifreeze

Rhyming Dictionary: Words that rhyme with antifreeze

Spanish Central: Translation of antifreeze

Nglish: Translation of antifreeze for Spanish Speakers Encyclopedia article about antifreeze

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a servile follower or underling

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