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blackbody

[blak-bod-ee]
noun, plural black·bod·ies. Physics.
  1. a hypothetical body that absorbs without reflection all of the electromagnetic radiation incident on its surface.
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Origin of blackbody

First recorded in 1700–10
Also called perfect radiator.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

blackbody in Science

blackbody

[blăkbŏdē]
  1. A theoretically perfect absorber and emitter of every frequency of electromagnetic radiation. The radiation emitted by a blackbody is a function only of its temperature.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

blackbody in Culture

blackbody

An object that can absorb and send off radiation with complete efficiency — that is, it reflects (see reflection) none of the radiation that falls on it. The higher the object's temperature, the higher the frequency of the radiation it gives off.

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The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.