About The Word Lumen

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Lumen

Lumen Meaning & Definition
Lumen Definition And Meaning

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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