Definition of "heliotherapy" []

• Medical therapy involving exposure to sunlight. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The operative surgical quality but that he was reluctant to shed human blood even when the end justified the means, preferring, in their natural order, heliotherapy, psychophysicotherapeutics, osteopathic surgery."
• "Those therapies are herbs and diet, breathing and exercise, acupuncture, massage, and heliotherapy sunlight therapy."
• "The key factor in heliotherapy is the invisible ultraviolet band, and the key receptor is the retina."