Synonyms of lumen
- 1. lumen, lm, luminous flux unit
- usage: 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. lumen, cavity, bodily cavity, cavum
- usage: a cavity or passage in a tubular organ; "the lumen of the intestine"
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Definition and meaning of lumen (Dictionary)