lumen

(redirected from Ansi lumen)
Also found in: Thesaurus, Medical, Encyclopedia.

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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

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.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
References in periodicals archive ?
The event will see over 7.5km of wiring, 78,000 LEDs in 165 video LED modules and ten 13,000 ANSI lumen projects that will light up the Boeing aircraft.
Combined with 50000:1 high contrast ratio, 2000 Ansi lumen high brightness, Rec.
This pocket-size LED projector provides full-size specs, 160 ANSI lumen high brightness that delivers the best contrast ratio 2000:1 and colour representation to users," LG said.
The VT460 (1,500 ANSI lumen, SVGA), VT560 (1,300 ANSI lumens, XGA), and VT660 (1,700 ANSI lumens, XGA) feature automatic keystone correction, direct access keys for one-touch source adjustments and a new focal lens for more flexibility.
This unique configuration results in amazingly accurate colors, achieving 97 percent of the DCI-P3 color space and up to 12-bit color processing for incredibly detailed and vibrant images of up to 2,700 ANSI lumens. And with UST technology, LG HU85L can be set a mere 5.6 centimeters from the wall to project a 90-inch diagonal image or placed 18 centimeters away for a massive 120-inch picture.
The projector itself weighs less than 2 pounds and offers 300 ANSI lumens of brightness and a 120,000:1 contrast ratio and dual Harman Kardon speakers on-board.
At 5,000 ANSI lumens and up to 3,500 hours of lamp life, the Acer P7605 is definitely a steal.
Barring a few minor gripes, this latest single-chip DLP, full-HD beamer maintains that well-earned reputation, boasting an impressive claimed brightness of 3000 ANSI lumens that makes it capable of decent performance even in brightly lit rooms.