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luminous exitance

British  

noun

  1.  Mv.  the ability of a surface to emit light expressed as the luminous flux per unit area at a specified point on the surface

"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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