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luminary
luminesce
luminescence
luminiferous
luminol
luminosity
luminous
luminous energy
luminous flux
luminous intensity
lumme
lummox
lump (1)
lump (2)
lump sum
lumpectomy
lumpen
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luminous flux
lu·mi·nous flux


noun 
Definition:
 
rate of emission of light: the rate of emission of light evaluated by the visual sensation it produces.
Symbol  ΦV
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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