the science or study of the effect of time, especially rhythms, on living systems.

Nearby words

  1. chronicle plays,
  2. chronicler,
  3. chronicles,
  4. chrono,
  5. chrono-,
  6. chronogram,
  7. chronograph,
  8. chronographer,
  9. chronographic,
  10. chronol.

Origin of chronobiology

First recorded in 1975–80; chrono- + biology

Related formschron·o·bi·o·log·i·cal [kron-oh-bahy-uh-loj-i-kuh l] /ˌkrɒn oʊˌbaɪ əˈlɒdʒ ɪ kəl/, adjectivechron·o·bi·ol·o·gist, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for chronobiology



the branch of biology concerned with the periodicity occurring in living organismsSee also biological clock, circadian
Derived Formschronobiologist, noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for chronobiology




The study of the effect of time on biological events, especially repetitive or cyclic phenomena in individuals.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.