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Word: lumen (lookup usage) (lookup stats)


Meaning:

Noun:

  • anatomy The cavity or channel within a tube or tubular organ.
  • botany The cavity bounded by a plant cell wall.
  • medicine The bore of a tube such as a hollow needle or catheter.
  • physics 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.

Source: Wiktionary | Src Info »