noun(used with sing. verb)
- 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. In both senses also called chronotherapy.
- (medicine) Any of several forms of therapy that is administered in phase with a person's biological clock