Definition of lux in English:

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Pronunciation: /lʌks/
(abbreviation lx)

noun (plural same)

The SI unit of illuminance, equal to one lumen per square metre.
Example sentences
  • Professional curators and conservators will look for work elsewhere, and amateurs will be hired who don't care whether light levels are 50 lux or 500 lux.
  • Light boxes for light therapy usually produce between 2,500 lux and 10,000 lux.
  • It is measured in foot-candles or lux.


Late 19th century: from Latin, literally 'light'.

Words that rhyme with lux

crux, dux, flux, luxe, tux

For editors and proofreaders

Line breaks: lux

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