lumen

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lumen

 [lu´men] (L.)
1. the cavity or channel within a tube or tubular organ, as a blood vessel or the intestine.
2. the SI unit of rate of flow of radiant energy, specifically that of the visible spectrum. adj., adj lu´minal.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

lu·men

, pl.

lu·mi·na

,

lu·mens

(lū'men, -min-ă, -menz),
1. The space in the interior of a hollow tubular structure (for example, artery or intestine).
2. The unit of luminous flux; the luminous flux emitted in a unit solid angle of 1 steradian by a uniform point source of light having a luminous intensity of 1 candela.
3. The volume enclosed within the membranes of a mitochondrion or of the endoplasmic reticulum.
4. The bore of a catheter or hollow needle.
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Farlex Partner Medical Dictionary © Farlex 2012

lumen

(lo͞o′mən)
n. pl. lu·mens or lu·mina (-mə-nə)
1. Anatomy The inner open space or cavity of a tubular organ, as of a blood vessel or an intestine.
2. Biology The interior of a membrane-bound compartment or organelle in a cell.
3. Abbr. lmPhysics The SI unit of luminous flux, equal to the amount of light per unit time passing through a solid angle of one steradian from a light source of one candela intensity radiating equally in all directions. See Table at measurement.

lu′men·al, lu′min·al adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

lu·men

(lm), pl. lumina (lū'mĕn, -mi-nă)
1. The space in the interior of a tubular structure, such as an artery or intestine.
2. The unit of luminous flux; the luminous flux emitted in a unit solid angle of 1 steradian by a uniform point source of light having a luminous intensity of 1 candela.
[L. light, window]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

lumen

The inside of any tube, such as a blood vessel, an air passage (bronchus) or the intestine.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

lumen

any cavity enclosed within a cell, or structure, such as the lumen of the gut.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Lumen

The inner cavity or canal of a tube-shaped organ, such as the bowel.
Mentioned in: Amebiasis
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.

lumen

1. SI unit of luminous flux. It is equal to the flux emitted within a unit solid angle of one steradian by a point source with a luminous intensity of one candela. Symbol: lm. 2. The space in the interior of a tubular organ, such as an artery. See luminous flux; quantity of light; lux; SI unit.
Table L4 Approximate luminance (in cd/m2) of some objects
sun109
car headlight107
incandescent lamp (tungsten)106-107
fluorescent lamp104-105
clear sky at noon104
cloudy sky at noon103
shady street by day103-104
full moon103
book print under artificial light>102
photopic vision>10
street illumination1-10−1
mesopic vision10-10−3
cloudless night sky with full moon10−2
scotopic vision<10−3
moonless and cloudless night sky10−3-10−6
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann

lu·men

, pl. lumina (lūmĕn, -mi-nă)
1. Space in interior of a hollow tubular structure (e.g., artery or intestine).
2. The bore of a catheter or hollow needle.
[L. light, window]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
The production of these immunomodulatory cytokines largely depends on resident DCs that sample the lumenal contents at the epithelial barrier (Cerovic et al.
Das 250 amostras de conteudo lumenal de ileo e jejuno analisadas, 171 (68,4%) demonstraram caracteristicas morfo-tintoriais e bioquimicas compativeis com Cp, apresentando bastonetes gram positivos curtos, colonias arredondadas, umbilicadas, brilhantes com zona de dupla hemolise no ASA e ausencia de crescimento em anaerobiose.
notoides, lumenal oil droplets disappeared slowly, over a period of days (7-8 days in our field-fed squid; 3-4 days in our mysid-fed squid), not hours or minutes.
Many of the airways from Mexico City also showed lumenal distortion (Figure 1C).
In "positive" or expansive remodeling, the vessel wall accommodates the atheroma by expanding outwardly, away from the lumen, thus maintaining lumenal diameter.
Ralph will be at the Lumenal Arts booth to discuss the philosophy of chaos expressionism and his unique artistic methods.
A-ALP, a model protein which consists of the cytoplasmic domain of dipeptidyl aminopeptidase A and the transmembrane and lumenal domains of alkaline phosphatase is a resident protein of the trans-Golgi network (TGN) in yeast.
Light microscopy showed a well developed neointima lining the anastomotic region of the graft without apparent lumenal reduction.
van der Klei, "Lumenal peroxisomal protein aggregates are removed by concerted fission and autophagy events," Autophagy, vol.
Suggested hypotheses include intrauterine vascular accidents, persistent embryonic diverticula, and aberrant lumenal recanalization.
Molecular modeling of the 3D structure of the lumenal domain of ribophorin I demonstrated that ribophorin I has several [beta]-propeller domains rich in hydrophobic amino acids on its molecular surface.