black·​body | \ ˈblak-ˈbä-dē \

Definition of blackbody

: an ideal body or surface that completely absorbs all radiant energy falling upon it with no reflection and that radiates at all frequencies with a spectral energy distribution dependent on its absolute temperature

Examples of blackbody in a Sentence

Recent Examples on the Web

Two of the assumptions used to obtain the rules of blackbody radiation provide loopholes. Chris Lee, Ars Technica, "Edge on cooling from nanostructure beats physical limit," 11 Sep. 2018

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

First Known Use of blackbody

1712, in the meaning defined above

Keep scrolling for more

Learn More about blackbody

Statistics for blackbody

Look-up Popularity

Time Traveler for blackbody

The first known use of blackbody was in 1712

See more words from the same year

More from Merriam-Webster on blackbody

Rhyming Dictionary: Words that rhyme with blackbody Encyclopedia article about blackbody

Comments on blackbody

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


a servile follower or underling

Get Word of the Day daily email!

Test Your Vocabulary

What did you just call me?! A Quiz

  • rows-of-various-emoji
  • If a member of the audience describes your speech as bombastic, does that person mean it is:
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Word Winder's CrossWinder

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


Love words? Need even more definitions?

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