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[rey-dee-ey-tiv] /ˈreɪ diˌeɪ tɪv/
giving off radiation.
Also, radiatory
[rey-dee-uh-tawr-ee, -tohr-ee] /ˈreɪ di əˌtɔr i, -ˌtoʊr i/ (Show IPA)
Origin of radiative
1830-40; radiat(ion) + -ive
Related forms
nonradiative, adjective
subradiative, adjective
unradiative, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for radiative
Historical Examples
  • Both surfaces appear to be metallic; what, then, is the cause of the observed difference in their radiative power?

  • Equally important is the inquiry into the mechanism of radiative equilibrium in sun and stars.

    Astronomy David Todd
  • It may be connected with the radiative intensity of the star, or its age, or both.

    Astronomy David Todd
  • For more complex molecules the radiative and absorptive powers are known to be much greater.

  • Its evolution is not in one continuous line, but is radiative from one common centre, and is dispersive.

  • Determining, moreover, the absorptive power of those powders, it is found to go hand-in-hand with their radiative power.

British Dictionary definitions for radiative


(physics) emitting or causing the emission of radiation: a radiative collision
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for radiative

"having a tendency to radiate," 1820, from radiate (v.) + -ive. Related: Radiativity.

Online Etymology Dictionary, © 2010 Douglas Harper
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