The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
noun (used with sing. verb) In both senses also called chronotherapy.
- Medical treatment administered according to a schedule that corresponds to a person's daily, monthly, seasonal, or yearly biological clock, in order to maximize the health benefits and minimize adverse effects.
- Treatment of a sleep disorder by altering an individual's sleeping and waking times and resetting his or her biological clock.