definitions

irradiance

[ ih-rey-dee-uh ns ]
/ ɪˈreɪ di əns /
|

noun Physics.

incident flux of radiant energy per unit area.

Nearby words

iroquois, iroquois league, irotomy, irq, irra, irradiance, irradiant, irradiate, irradiation, irradicable, irrational
Also irradiation.

Origin of irradiance

First recorded in 1660–70; ir-1 + radiance
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for irradiance

  • Their irradiance was greenish, like the walls; but I was certain that these corpuscles did not come from them.

    The Metal Monster|A. Merritt

  • The irradiance, almost as strong as daylight, but radically different, softened all surrounding objects.

    Ben Blair|Will Lillibridge

British Dictionary definitions for irradiance

irradiance

/ (ɪˈreɪdɪəns) /

noun

the radiant flux incident on unit area of a surface. It is measured in watts per square metreSymbol: E e Also called: irradiation Compare illuminance
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