Definition of chronotherapy
1
: treatment of a sleep disorder (such as insomnia) by changing sleeping and waking times in an attempt to reset the patient's biological clock
2
or chronotherapeutics \
ˌkrä-nə-ˌther-ə-ˈpyü-tiks
, ˌkrō-
\
: the administration of medication or treatment in coordination with the body's circadian rhythms to maximize effectiveness and minimize side effects
Keep scrolling for more
Keep scrolling for more
Test Your Vocabulary
Who Knew?
-
- What is a ruelle?

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Word Games
Share chronotherapy
Time Traveler for chronotherapy
The first known use of chronotherapy was in 1973
See more words from the same year