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.
If natural light is scarce, a light therapy lamp can mimic the effects of sunlight and be a great tool for an energy boost. Bryan Robinson, Forbes.com, 16 Sep. 2025 One of its most unique offerings includes the Happiness treatment, a light therapy session that's exclusive to Dior Spa's NYC location. Asa Canty, Travel + Leisure, 9 Sep. 2025 Additionally, guests can use a light therapy mask by SkinAct during their stay, a treatment that has become increasingly popular among facialists and even recommended and used by plastic surgeons. India Brown, Robb Report, 13 Aug. 2025 The device comes with a full lineup of attachments, including three percussive heads, a cleansing ring, LED light therapy targeting acne and fine lines, and a microcurrent attachment. Christa Joanna Lee, Allure, 8 July 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 17 Sep. 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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