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.
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. 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. Maria Sokolina, Forbes, 22 Jan. 2025 Sunrise alarm clocks don’t really work as light therapy, according to experts. Jamie Ballard, Allure, 16 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

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

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!