Meaning & Definition of Lumen in English
English⟶
Lumen
/lumən/
noun
1. 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
synonym:
- lumen,
- lm
2. A cavity or passage in a tubular organ
- "The lumen of the intestine"
synonym:
- lumen