lumen

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“
METHODS: Before and after the addition of Cd-MT (1 microg Cd / ml) to the lumen, the deflections of transmural voltage upon the elimination of glucose from the perfusate (DeltaVt (glu)) were measured as a parameter of activity of the Na-glucose cotransporter.

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Definitions (11)

Toggle American Heritage definitions American Heritage Dictionary (3)

  1. noun Anatomy The inner open space or cavity of a tubular organ, as of a blood vessel or an intestine.
  2. noun Physics The unit of luminous flux in the International System, equal to the amount of light given out through a solid angle by a source of one candela intensity radiating equally in all directions. See Table at measurement.
  3. noun Botany The cavity bounded by a plant cell wall.

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Examples (46)

  • This lumen is a membrane, much like a long balloon folded up on itself many times. —  AnalogSFF,May2006
  • ANSI lumen, as well as a contrast ratio in excess of 100,000: 1. —  Softpedia News - Global
  • Hyporesponsiveness to a universe of bacterial and dietary antigens from the gut lumen is a hallmark of the intestinal immune system. —  CiteULike: Everyone's library
  • METHODS: Before and after the addition of Cd-MT (1 microg Cd / ml) to the lumen, the deflections of transmural voltage upon the elimination of glucose from the perfusate (DeltaVt (glu)) were measured as a parameter of activity of the Na-glucose cotransporter. —  CiteULike: Everyone's library
  • A narrow connection to trachea lumen was also visible, a critical element to establish the diagnosis of tracheal diverticulosis. —  BioMed Central - Latest articles
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Etymologies (2)

Toggle American Heritage etymologies American Heritage Dictionary (1)

  1. Latin lūmen, an opening, light; see leuk- in Indo-European roots.

Toggle Century etymologies Century Dictionary (1)

  1. New Latin, from Latin lumen, light, a light, a window: see luminous.
 

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/ˈljumɛn/
by American Heritage

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