depinisyon kahulugan
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doc Definition of lumen
    English to English
    noun
  • 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
  • source: WordNet 3.0
  • a cavity or passage in a tubular organ
  • The lumen of the intestine.
    source: WordNet 3.0
  • 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.
  • source: Webster 1913
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