luminous flux unit 1
noundomain: quantity
Princeton WordNet [ver.3.1]
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EnglishDefinition
a measure of luminous flux per unit area
Hypernym
light unit 1
noun
a measure of the visible electromagnetic radiation
EnglishHyponym
lumen 1
noun
a unit of luminous flux equal to the amount of light given out through a solid angle of 1 steradian by a point source of 1 candela intensity radiating uniformly in all directions
