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

Examples of lux in a Sentence

Recent Examples on the Web Love is in the air and lux menus are popping up at many of Milwaukee’s most romantic restaurants just in time for Valentine’s Day. Rachel Bernhard, Journal Sentinel, 31 Jan. 2024 Eye-tracking purportedly works with indoor lighting as low as 10 lux. Scharon Harding, Ars Technica, 13 Oct. 2023 Light – Though offices average 300-500 lux, light needs differ by age, health, and tasks. Andrew Mawson, Forbes, 29 Feb. 2024 Send any news, comments, tooth fairy lux goods, and Moon boots to talk@qz.com. Morgan Haefner, Quartz, 16 Feb. 2024 The former features her rich, layered vocals as the song builds into a lux crescendo. Charisma Madarang, Rolling Stone, 14 Feb. 2024 However, the ambient light sensor is of low sensitivity (at 1 lux level), and the contribution of screen fluctuation is heavily quantized to ≤5 bits per measurement. Dan Goodin, Ars Technica, 23 Jan. 2024 Try harnessing the benefits of light therapy by sitting in front of a bright light (10,000 lux, roughly 20 times the power of ordinary indoor lighting) for around 15 minutes each morning. Hannah Coates, Vogue, 8 Nov. 2023 When choosing a light therapy lamp, try to look for a UVB-free white light that has 10,000 lux intensity and is wide enough to cover your face. Caitlin Pagán, Verywell Health, 3 Oct. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'lux.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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 18 Mar. 2024.

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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