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irradiance

 - 3 dictionary results

ir⋅ra⋅di⋅ance

[i-rey-dee-uhns]
–noun Physics.
incident flux of radiant energy per unit area.


Origin:
1660–70; ir- 1 + radiance
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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ir·ra·di·ant   (ĭ-rā'dē-ənt)   
adj.  Sending forth radiant light.

[Latin irradiāns, irradiant-, present participle of irradiāre, to shine forth; see irradiate.]
ir·ra'di·ance, ir·ra'di·an·cy n.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: ir·ra·di·ance
Pronunciation: ir-'Ad-E-&n(t)s
Function: noun
: the density of radiation incident on a given surfaceusually expressed in watts per square centimeter or square meter
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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