blackbody

noun
black·​body | \ ˈblak-ˈbä-dē How to pronounce blackbody (audio) \

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

That would have shifted the CMB’s spectrum away from a blackbody. Quanta Magazine, "Why the Big Bang’s Light May Have a Tilt," 30 June 2015 That’s important, said John Mather, an astrophysicist at NASA Goddard who won a Nobel Prize in 2006 for measuring the CMB’s blackbody spectrum with COBE. Quanta Magazine, "Why the Big Bang’s Light May Have a Tilt," 30 June 2015 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.

See More

First Known Use of blackbody

1712, in the meaning defined above

Keep scrolling for more

Learn More about blackbody

Statistics for blackbody

Last Updated

3 Jul 2019

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

Britannica.com: 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).

WORD OF THE DAY

to complain fretfully

Get Word of the Day daily email!

Test Your Vocabulary

What's that Smell?! Quiz

  • wide eyed dog smelling rose
  • Someone who is hircine smells like a:
True or False

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

TAKE THE QUIZ
Citation

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!