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
/ lʌks /
noun
Lux.
2
British
abbreviation
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
In another letter, speaking of the title for this book, he continues:— It was suggested only by the motto of the Oriental Society, "Ex Oriente lux."
From Concerning Lafcadio Hearn With a Bibliography by Laura Stedman by George M. (George Milbrey) Gould
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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