| NOUN | quantity | lm, lumen | 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 |
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| Meaning | 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. | |
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| Synonym | lumen | |
| Broader | luminous flux unit | A measure of luminous flux per unit area |
| Spanish | lm, lumen | |
| Catalan | lm, lumen | |
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