plural lux or luxes
: a unit of illumination equal to the direct illumination on a surface that is everywhere one meter from a uniform point source of one candle intensity or equal to one lumen per square meter

Example Sentences

Recent Examples on the Web Patients sit in front of a bright light box that gives off 10,000 lux, which is a unit of illuminance. Saleen Martin, USA TODAY, 22 Nov. 2022 Customers love Parachute for its minimalist, lux bedding that reads Pinterest-ready, whether your bed is made or unmade. Rachel Klein, Forbes, 26 Apr. 2021 One lux is equivalent to one lumen per 10.8 square feet. Wes Siler, Outside Online, 18 Aug. 2020 The lux jewelry was previously owned by legendary Bey. Elizabeth Ayoola, Essence, 15 Oct. 2019 Customers love Parachute for its minimalist, lux bedding that reads Pinterest-ready, whether your bed is made or unmade. Rachel Klein, Forbes, 26 Apr. 2021 Look for ones that have 10,000 lux for optimal benefits. Alexa Mikhail, Fortune, 29 Sep. 2022 Customers love Parachute for its minimalist, lux bedding that reads Pinterest-ready, whether your bed is made or unmade. Rachel Klein, Forbes, 26 Apr. 2021 Customers love Parachute for its minimalist, lux bedding that reads Pinterest-ready, whether your bed is made or unmade. Rachel Klein, Forbes, 26 Apr. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'lux.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

Etymology

Latin, light — more at light

First Known Use

1889, in the meaning defined above

Time Traveler
The first known use of lux was in 1889

Dictionary Entries Near lux

Cite this Entry

“Lux.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lux. Accessed 9 Dec. 2022.

Kids Definition

lux

noun
plural lux or luxes
: a unit that is used for measuring the amount of light falling on a surface and that is equal to one lumen per square meter

Medical Definition

lux

noun
plural lux or luxes
: a unit of illumination equal to the direct illumination on a surface that is everywhere one meter from a uniform point source of one candle intensity or equal to one lumen per square meter

called also meter-candle

More from Merriam-Webster on lux

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