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.

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First Known Use of blackbody

1712, in the meaning defined above

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Last Updated

3 Jul 2019

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Time Traveler for blackbody

The first known use of blackbody was in 1712

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More from Merriam-Webster on blackbody

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

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