Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The study of the effects of time and rhythmical phenomena on life processes.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The study of the effects of time on biological systems, especially the effects of periodicity

Etymologies

From Ancient Greek χρόνος (chrónos) "time" and biology. (Wiktionary)

Examples

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