coolant

noun
cool·​ant | \ ˈkü-lənt How to pronounce coolant (audio) \

Definition of coolant

: a usually fluid cooling agent

Examples of coolant in a Sentence

Recent Examples on the Web

Waste products from the camp—human sewage, diesel fuel, toxic chemicals such as PCBs, and radioactive coolant from the reactor—were left behind, too. Jon Gertner, WIRED, "The Top Secret Cold War Project That Pulled Climate Science From the Ice," 12 June 2019 Leonard — who has engine coolant running through his veins — has helped change that by leading with poise, but the Raptors might have been over-reliant on that leadership over the last few weeks. Dieter Kurtenbach, The Mercury News, "Kurtenbach: The 3 big things to watch in Game 3 of the NBA Finals," 5 June 2019 In the meantime, companies and scientists are working on climate-friendly alternatives, including new coolants and technologies that reduce or eliminate dependence on chemicals. Mark Thiessen, National Geographic, "Ozone depletion, explained," 18 Apr. 2019 My 2012 Toyota Corolla’s coolant has been checked but never changed. Bob Weber, chicagotribune.com, "Does shutting off accessories before shutting off engine preserve the battery?," 13 Jan. 2018 Problem: Antifreeze not living up to its name Engine coolant, a.k.a. David Muller, Car and Driver, "How Severe Cold Affects Your Car (and What to Do about It)," 5 Jan. 2018 Extra bottles of coolant, oil and transmission fluid are also a good idea. Crystal Paul, The Seattle Times, "6 safety tips for a solo road trip," 3 Aug. 2018 That means coolant can't flow directly over the magnets to cool them. Matthew Jancer, Popular Mechanics, "Speaking of Spokes: The Design That Could Change How Electric Car Motors Are Made," 20 Nov. 2018 The company has identified the cause of the engine fires as leaks of glycol coolant in their exhaust gas recirculation (EGR) coolers. Kim Tong-hyung, The Seattle Times, "South Korea bans driving BMWs under recall due to fires," 14 Aug. 2018

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

See More

First Known Use of coolant

1915, in the meaning defined above

History and Etymology for coolant

cool entry 2 + -ant entry 1

Keep scrolling for more

Learn More about coolant

Dictionary Entries near coolant

cool

coolabah

coolamon

coolant

cool bath

cool beans

cool/calm head

Statistics for coolant

Last Updated

19 Jun 2019

Look-up Popularity

Time Traveler for coolant

The first known use of coolant was in 1915

See more words from the same year

Keep scrolling for more

More Definitions for coolant

coolant

noun

English Language Learners Definition of coolant

: a liquid that is used to cool an engine or machine

Keep scrolling for more

More from Merriam-Webster on coolant

Spanish Central: Translation of coolant

Nglish: Translation of coolant for Spanish Speakers

Britannica English: Translation of coolant for Arabic Speakers

Britannica.com: Encyclopedia article about coolant

Comments on coolant

What made you want to look up coolant? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

providing supplementary assistance

Get Word of the Day daily email!

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

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