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lux

[luhks]
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noun, plural lu·ces [loo-seez] /ˈlu siz/, lux·es. Optics.
  1. a unit of illumination, equivalent to 0.0929 foot-candle and equal to the illumination produced by luminous flux of one lumen falling perpendicularly on a surface one meter square. Symbol: lx

Origin of lux

1885–90; < Latin lūx light1
Also called meter-candle.

Lux.

  1. Luxembourg.

fiat lux

[fee-aht loo ks; English fee-aht luhks, fahy-uh t]
Latin.
  1. let there be light.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for lux

lux1

noun plural lux
  1. the derived SI unit of illumination equal to a luminous flux of 1 lumen per square metre. 1 lux is equivalent to 0.0929 foot-candleSymbol: lx

Word Origin

C19: from Latin: light

lux2

verb
  1. NZ informal to clean with a vacuum cleaner

Word Origin

C20: from Electrolux, a vacuum-cleaner manufacturer

Lux.

abbreviation for
  1. Luxembourg
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for lux

n.

unit of illumination, 1889, from Latin lux "light" (see light (n.)).

Online Etymology Dictionary, © 2010 Douglas Harper

lux in Medicine

lux

(lŭks)
n. pl. lux•es
  1. The International System unit of illumination, equal to one lumen per square meter.candle-meter meter-candle
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

lux in Science

lux

[lŭks]
Plural luxes luces (lōōsēz)
  1. A SI derived unit of illuminance in photometry, equal to one lumen per square meter.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.