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.
The full spa gives a nod to sauna, ice bath, hot bath, massage, and infrared light therapy, attends to wellness. — Kathleen Turner, Forbes.com, 23 June 2026 Some of the tools used in cognitive behavioral therapy include light therapy lamps, wake-up lights and sound machines. — Bestreviews, Chicago Tribune, 16 June 2026 One nine-minute cycle includes three types of LED light therapy, and a blissful facial massage. — Bronwyn Barnes, InStyle, 4 June 2026 Berner admitted that she's dabbled in some of the trends, including light therapy, but hasn't undergone a laser treatment yet. — Catherine Santino, PEOPLE, 3 July 2026 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

Rhymes for light therapy

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Browse Nearby Words

light table
light therapy
light the way
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Cite this Entry

“Light therapy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/light%20therapy. Accessed 7 Jul. 2026.

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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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