coolant

play
noun cool·ant \ˈkü-lənt\

Definition of coolant

  1. :  a usually fluid cooling agent

Recent Examples of coolant from the Web

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


COOLANT Defined for English Language Learners

coolant

play
noun

Definition of coolant for English Language Learners

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



Seen and Heard

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

Love words? Need even more definitions?

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

WORD OF THE DAY

lethargy or dullness

Get Word of the Day daily email!

Test Your Vocabulary

Time Traveler Quiz: Which Word Came First?

  • time-traveler-quiz-which-word-came-first
  • Which came first?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Word Winder's CrossWinder

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!