radiator

noun ra·di·a·tor \ ˈrā-dē-ˌā-tər , dialectal ˈra- \
Updated on: 13 Apr 2018

Definition of radiator

: one that radiates: such as
a : any of various devices (such as a series of pipes or tubes) for transferring heat from a fluid within to an area or object outside
b : a transmitting antenna

Recent Examples of radiator from the Web

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

First Known Use of radiator

1836


RADIATOR Defined for English Language Learners

radiator

Definition of radiator for English Language Learners

  • : a large, metal device that is next to the wall in a room and that becomes hot and provides heat for the room when hot water passes through it

  • : a device that is used to keep the engine of a vehicle from getting too hot


RADIATOR Defined for Kids

radiator

noun ra·di·a·tor \ ˈrā-dē-ˌā-tər \

Definition of radiator for Students

: a device to heat air (as in a room) or to cool an object (as an automobile engine) by heating the surrounding air


Seen and Heard

What made you want to look up radiator? 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

unwilling or reluctant

Get Word of the Day daily email!

Test Your Vocabulary

Odd Habits and Quirks Quiz

  • image1926873504
  • Which of the following best describes an easily irritated person?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

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!