About The Word Lumen
Learn about the word Lumen to help solve your crossword puzzle. Discover Lumen definitions and meaning, origins, synonyms, related terms and more at the free Crossword Dictionary.
Lumen
| Lumen Definition And Meaning |
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What's The Definition Of Lumen?
[n] a cavity or passage in a tubular organ; "the lumen of the intestine"
[n] 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 Synonyms | Synonyms for Lumen: lm Related Terms | Find terms related to Lumen: ASA scale | bougie decimale | British candle | candle | candle lumen | candle power | candle-foot | candle-hour | candle-meter | decimal candle | exposure meter | flux | foot-candle | Hefner candle | intensity | international candle | lamp-hour | light | light meter | light quantum | lumen meter | lumen-hour | lumeter | luminous flux | luminous intensity | luminous power | lux | photon | quantum | Scheiner scale | unit of flux | unit of light See Also | bodily cavity | cavity | cavum | luminous flux unit Lumen In Webster's Dictionary \Lu"men\, n.; pl. L. {Lumina}, E. {Lumens}. [L., light, an
opening for light.]
1. (Photom.)
(a) A unit of illumination, being the amount of
illumination of a unit area of spherical surface, due
to a light of unit intensity placed at the center of
the sphere.
(b) A unit of light flux, being the flux through one
square meter of surface the illumination of which is
uniform and of unit brightness.
2. (Biol.) An opening, space, or cavity, esp. a tubular
cavity; a vacuole.
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