lumen

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lu·men

 (lo͞o′mən)
n. pl. lu·mens or lu·mi·na (-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. lm Physics 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.

[Latin lūmen, an opening, light; see leuk- in Indo-European roots.]

lu′men·al, lu′min·al adj.

lumen

(ˈluːmɪn)
n, pl -mens or -mina (-mɪnə)
1. (Units) the derived SI unit of luminous flux; the flux emitted in a solid angle of 1 steradian by a point source having a uniform intensity of 1 candela. Symbol: lm
2. (Anatomy) anatomy a passage, duct, or cavity in a tubular organ
3. (Botany) a cavity within a plant cell enclosed by the cell walls
[C19: New Latin, from Latin: light, aperture]
ˈlumenal, ˈluminal adj

lu•men

(ˈlu mən)

n., pl. -mens, -mi•na (-mə nə)
1. the unit of luminous flux, equal to the luminous flux emitted in a unit solid angle by a point source of one candle intensity. Abbr.: lm
2. the canal, duct, or cavity of a tubular organ.
[1870–75; < New Latin; Latin lūmen, s. lūmin- light, window]

lu·men

(lo͞o′mən)
1. Anatomy The central space in a tubular organ, such as a blood vessel or intestine.
2. Physics A unit used to measure the amount of light passing through a given area per second. One lumen is equal to the amount of light that passes through a given area (shaped like a cone) that is illuminated by a light with a brightness of one candela.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.lumen - 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
luminous flux unit - a measure of luminous flux per unit area
2.lumen - a cavity or passage in a tubular organ; "the lumen of the intestine"
bodily cavity, cavum, cavity - (anatomy) a natural hollow or sinus within the body
Translations
References in periodicals archive ?
The lumenal plasma membrane of the absorptive cell contains at least three amino acid transporters (AAT), one each for acidic, basic and neutral amino acids (Xiong et al.
I will generate transgenic Drosophila that express mitochondrial and cytosolic Ca2+ sensors, and attempt to develop a suitable lumenal ER sensor.
2]-P-P-dolichol) for protein N-glycosylation can be synthesized on the lumenal leaflet of ER.
Close review shows angioinvasion of fungal forms resulting in lumenal thrombosis.
These cells consist of several ontogenically and phenotypically distinct populations of T cells (Guy-Grand, 1998) and they are one of the immune cells in intestinal epithelium that are involved in the development of tolerance and adaptive response to lumenal antigens while IELs perform surveillance of the epithelium (Lundqvist et al.
Thus, the interactions between the immune cells, intestinal barrier, and lumenal microbiome are of major interest in all areas related to pathology associated with the intestines.
2001) PIG-M transfers the first mannose to glycosylphosphatidylinositol on the lumenal side of the ER.
We decided that more than a 70% lumenal narrowing would be clinically significant.
En la membrana de golgi, la proteasa SP1 se activa y corta SREBP en el medio de su bucle hidrofilo lumenal.
Das alcas intestinais foi retirado 1g de conteudo lumenal de ileo e jejuno para inoculacao em tubos de rosca contendo 20mL de caldo tioglicolato.
To determine which cytosolic determinants in furin might localize the lumenal Kex2p enzymatic domain to the TGN of yeast, a chimeric gene expressing the N-terminal and enzymatic portion of the yeast KEX2 gene was fused to the carboxy-terminal portion of the fur gene (KF).