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The Clue
Light flux units (6 letter answer)
The Answer
LUMENS
Tags
Notes
The answer LUMENS is so rare that it appears less than once every 2900 puzzles.
Related Clues
Light measures
Light units
Definition
LUMEN as a noun:
1. (lumen, lm) = 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
2. a cavity or passage in a tubular organ; "the lumen of the intestine"