Lumen
Lumen Lu"men, n.; pl. L. {Lumina}, E. {Lumens}. [L., light, an opening for light.] 1. (Photom.) (a) 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. (b) A unit of light flux, being the flux through one square meter of surface the illumination of which is uniform and of unit brightness. [Webster 1913 Suppl.]

2. (Biol.) An opening, space, or cavity, esp. a tubular cavity; a vacuole. [Webster 1913 Suppl.]


The Collaborative International Dictionary of English. 2000.

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  • lumen — lumen …   Dictionnaire des rimes

  • lumen — [ lymɛn ] n. m. • 1897; mot lat. « lumière » ♦ Phys. Unité de mesure de flux lumineux (symb.lm), correspondant au flux émis dans un stéradian par une source ponctuelle uniforme située au sommet de l angle solide et ayant une intensité de 1… …   Encyclopédie Universelle

  • lumen — LÚMEN, (1) lumeni, s.m. (2) lumene, s.n. 1. s.m. Unitate de măsură a fluxului luminos. 2. s.n. Canal al unui organ anatomic cavitar (intestin, vas sangvin) sau al unor fibre textile. – Din fr. lumen. Trimis de ana zecheru, 20.05.2004. Sursa: DEX… …   Dicționar Român

  • Lumen — can mean:* Lumen (unit), the SI unit of luminous flux * Lumen (anatomy), the cavity or channel within a tubular structure * Thylakoid lumen, the inner membrane space of the chloroplast * 141 Lumen, an asteroid discovered by the French astronomer… …   Wikipedia

  • Lumen — steht für: Lumen (Einheit), die photometrische SI Einheit des Lichtstroms der innere Querschnitt von Rohren oder Röhren bzw. die lichte Weite (Innendurchmesser) einer Kanüle oder eines Katheters Lumen (Biologie), das Innere von Hohlorganen in der …   Deutsch Wikipedia

  • LUMEN — Pays d’origine  Russie Genre(s) Rock, Alternatif Années actives 1998 – Aujourd hui Label(s) …   Wikipédia en Français

  • lumen — lȗmen m DEFINICIJA 1. fiz. SI izvedena jedinica svjetlosnog toka (simbol lm), svjetlosni tok točkastog izvora intenziteta jedne kandele (cd) u prostorni kut od jednog prostornog radijana (lm = cd·sr) 2. anat. prostor unutar organa cjevasta ili… …   Hrvatski jezični portal

  • LUMEN — I (лат.) свет. Lumen naturale и lumen supranaturale см. Метафизика света. II (лат. – естественный свет ) восходящее к античной метафизике света понятие, характеризующее конечность человеческого познания. По Августину …   Философская энциклопедия

  • lumen — m. anat. Luz de un vaso o de un conducto. Medical Dictionary. 2011. lumen Unidad de flujo …   Diccionario médico

  • lumen — unit of luminosity, 1897, coined 1894 by French physicist André Eugène Blondel (1863 1938) from L. lumen light, related to lucere to shine (see LIGHT (Cf. light) (n.)) …   Etymology dictionary

  • lumen — (Del lat. lumen, luz). m. Ópt. Unidad de flujo luminoso del Sistema Internacional, que equivale al flujo luminoso emitido por una fuente puntual uniforme situada en el vértice de un ángulo sólido de un estereorradián y cuya intensidad es una… …   Diccionario de la lengua española

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