Lumen

Definition of Lumen

Lu´men

n.	1.	(Photom.) A unit of illumination, being the amount of illumination of a unit area of spherical surface, due to a light of unit intensity placed at the center of the sphere.
	2.	(Biol.) An opening, space, or cavity, esp. a tubular cavity; a vacuole.

Related Words

ASA scale, British candle, Hefner candle, Scheiner scale, bougie decimale, candle, candle lumen, candle power, candle-foot, candle-hour, candle-meter, decimal candle, exposure meter, flux, foot-candle, intensity, international candle, lamp-hour, light, light meter, light quantum, lumen meter, lumen-hour, lumeter, luminous flux, luminous intensity, luminous power, lux, photon, quantum, unit of flux, unit of light

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Lumachel
Lumbaginous
Lumbago
Lumbar
Lumbar region
Lumber
Lumber kiln
Lumber room
Lumber State
Lumber wagon
Lumberer
Lumbering
lumberjack
Lumberman
Lumbosacral
Lumbric
Lumbrical
Lumbriciform
Lumbricoid
Lumbricus
-Lumen-
Luminant
Luminary
Luminate
Lumination
Lumine
Luminescence
Luminescent
Luminiferous
Luminosity
Luminous
Luminous paint
luminousness
Lummox
Lump
Lump together
Lumpectomy
lumpen
Lumpenproletariat
Lumper
Lumpfish

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