lux

[ luhks ]

/ lʌks /

noun, plural lu·ces [loo-seez] /ˈlu siz/, lux·es. Optics.

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

Nearby words

lutz-splendore-almeida disease, lutzomyia, luv, luvvie, luwian, lux, lux., luxate, luxe, luxembourg, luxembourger

Origin of lux

1885–90; < Latin lūx light¹

Also called meter-candle.

Definition for lux (2 of 3)

Lux.

Luxembourg.

Definition for lux (3 of 3)

fiat lux

[ fee-aht loo ks; English fee-aht luhks, fahy-uh t ]

/ ˈfi ɑt ˈlʊks; English ˈfi ɑt ˈlʌks, ˈfaɪ ət /

Latin.

let there be light.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for lux

To put that into perspective, indoor lighting is about 100 lux, while a bright, sunny day can hit 50,000 lux or more.
Fight Seasonal Affective Disorder With This New Tracker|DailyBurn|November 7, 2014|DAILY BEAST
The “gold standard” dose is 30 minutes of 10,000 lux light, one hour of 5,000 lux light or two hours of 2,500 lux light.
Fight Seasonal Affective Disorder With This New Tracker|DailyBurn|November 7, 2014|DAILY BEAST
However, an overcast sky (like you see often during the winter) usually ranks at only 1,000 lux or lower.
Fight Seasonal Affective Disorder With This New Tracker|DailyBurn|November 7, 2014|DAILY BEAST
Even Loaded Lux could not keep a straight face, smiling as his competitor established a clear, early lead and never let up.
America’s Poets: Battle Rap Gets Real|Rich Goldstein|July 15, 2014|DAILY BEAST

The attorney pulled out the naked-woman flyer from Lux Lounge.
How a Blogger Blocked Sex Slavery|Abigail Pesta|March 22, 2011|DAILY BEAST
In that brightness I sometimes see another light, for which the name Lux vivens has been given me.
The Mediaeval Mind (Volume I of II)|Henry Osborn Taylor
He had taken the lux metal case off and was looking at the neat apparatus that lay within.
Islands of Space|John W Campbell
Admiring friends came to hear him talk, and brought their sons to see this glory of their country—Lux mundi, as he was called.
The Age of Erasmus|P. S. Allen
It is made of cosmic ray photons, as lux is made of light photons, but the inexpressibly tighter bond makes the strength enormous.
Invaders from the Infinite|John Wood Campbell
Kurt with Lux and his enterprising sister Clevi were at the extreme front.
Maezli|Johanna Spyri

British Dictionary definitions for lux (1 of 3)

lux

/ (lʌks) /

noun plural lux

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 for lux

C19: from Latin: light

British Dictionary definitions for lux (2 of 3)

lux

/ (lʌks) /

verb

NZ informal to clean with a vacuum cleaner

Word Origin for lux

C20: from Electrolux, a vacuum-cleaner manufacturer

British Dictionary definitions for lux (3 of 3)

Lux.

abbreviation for

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

lux

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

Medicine definitions for lux

lux

[ lŭks ]

n. pl. lux•es

The International System unit of illumination, equal to one lumen per square meter.candle-meter meter-candle

Science definitions for lux

lux

[ lŭks ]

Plural luxes luces (lōō′sēz)

A SI derived unit of illuminance in photometry, equal to one lumen per square meter.