AskDefine | Define lumen

Dictionary Definition

lumen

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 [syn: lm]
2 a cavity or passage in a tubular organ; "the lumen of the intestine" [also: lumina (pl)]

User Contributed Dictionary

English

Pronunciation

Noun

  1. In the International System of Units, the derived unit of luminous flux; the amount of light that falls on a unit area at unit distance from a source of one candela. Symbol: lm.
  2. The cavity or channel within a tube or tubular organ.
  3. The cavity bounded by a plant cell wall.
  4. The bore of a tube such as a hollow needle or catheter.

Translations

Derived terms

Finnish

Etymology 1

Noun

lumen

Etymology 2

inflected form of lumi

Noun

lumen

Latin

Pronunciation

  • /ˈluː.mɛn/

Inflection

Swedish

Noun

lumen
  1. lumen (singular and plural)

Extensive Definition

Lumen can mean:

See also

lumen in German: Lumen
lumen in Spanish: Lumen
lumen in French: Lumen
lumen in Indonesian: Lumen
lumen in Japanese: ルーメン (曖昧さ回避)
lumen in Dutch: Lumen
lumen in Polish: Lumen
lumen in Slovak: Lúmen
lumen in Slovenian: Lumen (razločitev)
lumen in Finnish: Luumen
lumen in Swedish: Lumen

Synonyms, Antonyms and Related Words

ASA scale, British candle, Hefner candle, Scheiner scale, bougie decimale, candle, candle lumen, candle power, candle-foot, candle-hour, candle-meter, decimal candle, exposure meter, flux, foot-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, unit of flux, unit of light
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