lux [ luhks ] SHOW IPA / lʌks / PHONETIC RESPELLING 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
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Origin of lux
lūx light 1 Other definitions for lux (2 of 2)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use lux in a sentence
To put that into perspective, indoor lighting is about 100
lux, while a bright, sunny day can hit 50,000 lux or more.
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.
However, an overcast sky (like you see often during the winter) usually ranks at only 1,000
lux or lower. Lux entered the stage dressed head to toe in white, accompanied by an entourage.
Lux could not keep a straight face, smiling as his competitor established a clear, early lead and never let up. Lux, like one crazed, suddenly rushed headlong away between the trees and down the hill.
The motto on the scroll, "Ex tenebris
lux," appears to have existed anterior to the light of the Reformation.
On the screen, a machine rolled in on caterpillar treads, picked up the
lux case and its contents, and carried them off.
I suggest that we make the hull of foot-thick
lux metal and line it on the inside with re lux wherever we want it to be opaque.
The huge walls of
lux metal required great care in construction, for they could not be welded; they had to be formed in position. SEE MORE EXAMPLES SEE FEWER EXAMPLES British Dictionary definitions for lux (1 of 3) 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-candle Symbol: lx Word Origin for lux
C19: from Latin: light
British Dictionary definitions for lux (2 of 3) verb NZ informal to clean with a vacuum cleaner Word Origin for lux
Electrolux, a vacuum-cleaner manufacturer British Dictionary definitions for lux (3 of 3)
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
Scientific definitions for lux Plural luxes luces ( lōō) ′sēz 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.