heliotherapy
noun
he·lio·ther·a·py
-ˈther-ə-pē 
plural heliotherapies
: the use of sunlight or of an artificial source of ultraviolet, visible, or infrared radiation for therapeutic purposes
Cite this Entry
“Heliotherapy.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/heliotherapy. Accessed 3 Jul. 2025.
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