lumen

1. Anatomy The inner open space or cavity of a tubular organ, as of a blood vessel or an intestine.

2. Botany The cavity bounded by a plant cell wall.

3. 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.

4. The cavity of a tubular organ or part .

5. The bore of a tube (as of a hollow needle or catheter).

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Top Words by points	Points	Word Game
lumen	7	Scrabble

2 Letters	Scrabble® Points
mu	4
un	2
um	4
nu	2
ne	2
el	2
me	4
en	2
em	4

3 Letters	Scrabble® Points
lun	3
lum	5
leu	3
mel	5
men	5
mun	5
emu	5
elm	5

4 Letters	Scrabble® Points
lune	4
menu	6
mule	6
neum	6

5 Letters	Scrabble® Points
lumen	7