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LUMEN (lumina)

Pronunciation (US): 

 Dictionary entry overview: What does lumen mean? 

LUMEN (noun)
  The noun LUMEN has 2 senses:

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
2. a cavity or passage in a tubular organ

  Familiarity information: LUMEN used as a noun is rare.


 Dictionary entry details 


LUMEN (noun)


Sense 1lumen [BACK TO TOP]

Meaning:

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

Classified under:

Nouns denoting quantities and units of measure

Synonyms:

lm; lumen

Hypernyms ("lumen" is a kind of...):

luminous flux unit (a measure of luminous flux per unit area)


Sense 2lumen [BACK TO TOP]

Meaning:

A cavity or passage in a tubular organ

Classified under:

Nouns denoting body parts

Context example:

the lumen of the intestine

Hypernyms ("lumen" is a kind of...):

bodily cavity; cavity; cavum ((anatomy) a natural hollow or sinus within the body)


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