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 Such reactors use heavy water as a coolant and produce plutonium as a waste product, which can be used in nuclear weapons. Laurence Norman, WSJ, 25 May 2022 The Breakthrough Institute and others in Silicon Valley, meanwhile, are trying to nurture a new generation of reactors that are more versatile, efficient and safe, using sodium or helium as a coolant instead of water. Evan Halper, Washington Post, 24 May 2022 The Breakthrough Institute and others in Silicon Valley, meanwhile, are trying to nurture a new generation of reactors that are more versatile, efficient and safe, using sodium or helium as a coolant instead of water. Evan Halper, Anchorage Daily News, 24 May 2022 When your car's on the lift for an oil change, other wear items such as brake pads, coolant, tires, and shocks can also be assessed and possibly replaced. Jack Keebler, Car and Driver, 26 Apr. 2022 That refrigerant goes to the heat pump where thermal energy is extracted and transferred to the battery coolant. Sam Abuelsamid, Forbes, 25 Apr. 2022 New spark plugs were installed when it was serviced earlier this year, along with fresh oil and coolant. Bryan Hood, Robb Report, 20 Apr. 2022 King, 16 at the time, said the teens had previously used a coolant container to stop the truck from rolling back. Teresa Moss, Arkansas Online, 2 Apr. 2022 For $237, the dealer changed the oil and oil filter, rotated the tires, and inspected the battery connections, brakes, tires, and coolant levels. Beth Nichols, Car and Driver, 26 Jan. 2022 See More

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.

First Known Use of coolant

1915, in the meaning defined above

History and Etymology for coolant

cool entry 2 + -ant entry 1

Buying Guide

Our Reviews team has selected the best refrigerators.

Learn More About coolant

Time Traveler for coolant

Time Traveler

The first known use of coolant was in 1915

See more words from the same year

Dictionary Entries Near coolant

coolamon

coolant

cool bath

See More Nearby Entries 

Statistics for coolant

Last Updated

9 Jun 2022

Cite this Entry

“Coolant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coolant. Accessed 28 Jun. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More from Merriam-Webster on coolant

Nglish: Translation of coolant for Spanish Speakers

Britannica English: Translation of coolant for Arabic Speakers

Britannica.com: Encyclopedia article about coolant

WORD OF THE DAY

Test Your Vocabulary

Name That Food

  • a-light
  • Name these cookies!
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

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!