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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
Beyond ease of use, Shark’s LED light therapy mask is worth it because of its versatile treatments that solve a slew of major skin concerns with quick, easy treatments.
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Claire Sullivan, WWD, 7 Feb. 2025
The global light therapy industry is projected to grow from $1.03 billion in 2024 to $1.56 billion by 2032.
—
Nicole Dunn, Forbes, 15 Jan. 2025
Use Light Therapy: Use light therapy devices, like 40Hz light therapy, to reset your circadian rhythm and improve sleep and cognitive performance, especially when natural light is limited.
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Maria Sokolina, Forbes, 22 Jan. 2025
Sunrise alarm clocks don’t really work as light therapy, according to experts.
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Jamie Ballard, Allure, 16 Jan. 2025
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Word History
First Known Use
1987, in the meaning defined above
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 19 Feb. 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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