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lumen

noun

Meaning

  1. nounIn the International System of Units, the derived unit of luminous flux; the light that is emitted in a solid angle of one steradian from a source of one candela. Symbol: lm.
  2. nounThe cavity or channel within a tube or tubular organ.
  3. nounThe cavity bounded by a plant cell wall.

Source: Wiktionary (CC BY-SA 4.0)

Five-letter puzzle facts

How common
Common
#1,560 of 8,600 five-letter words by how often they're used
Can be a Play Five answer
As a first guess
Tests likely letters better than 60% of common five-letter words.
Vowels: 2 · Different letters: 5 · Repeated letters: None