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chron·o·ther·a·peu·tics

(krŏn′ō-thĕr′ə-pytĭks, krō′nə-)

n. (used with sing. verb)

1. 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.

2. Treatment of a sleep disorder by altering an person's sleeping and waking times and resetting their biological clock. In both senses also called chronotherapy.

Indo-European & Semitic Roots Appendices

Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

Indo-European Roots

Semitic Roots

The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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