heliotherapy

noun
he·​lio·​ther·​a·​py | \ -ˈther-ə-pē How to pronounce heliotherapy (audio) \
plural heliotherapies

Medical Definition of heliotherapy

: the use of sunlight or of an artificial source of ultraviolet, visible, or infrared radiation for therapeutic purposes

Learn More about heliotherapy

Cite this Entry

“Heliotherapy.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/heliotherapy. Accessed 27 Jan. 2021.

Comments on heliotherapy

What made you want to look up heliotherapy? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Slippery Words Quiz—Changing with the Times

  • ducreux self portrait yawning
  • What is an earlier meaning of nice?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

TAKE THE QUIZ
Love words? Need even more definitions?

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