lux
noun
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. lx
lux
1 American
[luhks]
/ lʌks /
noun
Optics.
-
luces
plural
Lux.
2
American
abbreviation
Lux.
1
British
abbreviation
lux
2
British
/ lʌks /
noun
lux
3
British
/ lʌks /
verb
lux
Scientific
/ lŭks /
-
luxes
plural
Other Word Forms
Noun Inflected Forms
Etymology
Origin of lux
1885–90; < Latin lūx light 1
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
The top-shelf Touring edition throws some lux the Trailseeker’s way, with panoramic roof and 20-inch alloy wheels.
From The Wall Street Journal ● Sep. 19, 2026
The researchers then compared participants who experienced nighttime light levels above three lux with those who were exposed to almost no light at night.
From Science Daily ● Sep. 11, 2026
Aston, who dreams of working for SpaceX, even led children in experiments to measure lux levels and temperature during the partial eclipse.
From BBC ● Aug. 13, 2026
They’re both lux and comfortable, providing excellent noise cancellation and a great listening experience.
From Salon ● Nov. 20, 2025
As the men looked out of the clear lux metal windows, they saw the tiny blur of light on the soft black curtain of space.
From Islands of Space by John Wood Campbell
The dressing ritual concludes as she puts on her ornate scarlet and gold jacket – the traje de luces, or suit of lights.
From The Guardian ● Mar. 16, 2017
He made his debut in Mexico in 1961 in a borrowed traje de luces, harbouring professional ambitions until he was gored and battered in Juarez by a beast named Conquistador.
From The Guardian ● Mar. 16, 2017
One January day, he wrote, in a mix of Spanish and English: “Hector olvido luces ‘on’ —dead battery” after I left my car lights on while studying at UC Irvine.
From Los Angeles Times ● May 3, 2013
Quarterly, 1 and 4 a lion rampant for Percy, 2 and 3 three luces hauriant for Lucy—Percy.
From The Cathedral Church of York Bell's Cathedrals: A Description of Its Fabric and A Brief History of the Archi-Episcopal See by A. (Arthur) Clutton-Brock
All his successors gone before him hath done’t; and all his ancestors that come after him may: they may 15 give the dozen white luces in their coat.
From The Merry Wives of Windsor The Works of William Shakespeare [Cambridge Edition] [9 vols.] by John Glover
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