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.
This Best of Beauty Award winner comes with several attachments—microcurrent, percussion, cleansing, and LED light therapy—blue light targeting acne, red light targeting fine lines all over, and red light plus-infrared for targeting fine lines specifically around your eyes. Annie Blackman, Allure, 3 Apr. 2025 Opt for gentle treatments like lotions, steam, and light therapy, as harsh treatments that break the skin, may be more likely to trigger a psoriasis flare. Sarah Bence, Otr/l, Verywell Health, 2 Apr. 2025 It’s also called low-power laser therapy, soft laser therapy, cold laser therapy and nonthermal LED light therapy. Praveen Arany, The Conversation, 24 Jan. 2025 Some newer concepts include ultraviolet light therapy and more modern versions of Pilates. Allbusiness, Forbes, 9 Jan. 2025 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

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Cite this Entry

“Light therapy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/light%20therapy. Accessed 15 Apr. 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

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