light therapy

noun

: the treatment of medical or psychiatric conditions (such as seasonal affective disorder) by the controlled application of light

called also light treatment, phototherapy

Examples of light therapy in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Sunrise alarm clocks don’t really work as light therapy, according to experts. Jamie Ballard, Allure, 16 Jan. 2025 While the device, designed for light therapy, promises to improve skin and stimulate collagen production, her dog, Peanut, seems less than impressed. Dan Perry, Newsweek, 5 Jan. 2025 And multifamily spas have gone well beyond the tiny spas of old to incorporate the latest spa technology, from touchless treatment options to zero-gravity flotation pods, wearable wellness devices and infrared and LED light therapies. Jeffrey Steele, Forbes, 23 Dec. 2024 Pregnancy-safe skincare treatments Gentle peels, such as lactic acid peels, rejuvenating facials, and LED light therapy, are typically considered safe to do while pregnant. Shani Hillian, Essence, 20 Dec. 2024 See all Example Sentences for light therapy 

Word History

First Known Use

1987, in the meaning defined above

Time Traveler
The first known use of light therapy was in 1987

Dictionary Entries Near light therapy

Cite this Entry

“Light therapy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/light%20therapy. Accessed 24 Jan. 2025.

Medical Definition

light therapy

noun
: phototherapy
especially : the use of strong light (as of 10,000 lux intensity) for the treatment of depression and gloom (as in seasonal affective disorder)

called also light treatment

Last Updated: - Updated example sentences
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