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

1975–80; chrono- + biology

chronobiological [kron-oh-bahy-uh-loj-i-kuhl] , adjective
chronobiologist, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
chronobiology (ˌkrɒnəbaɪˈɒlədʒɪ, ˌkrəʊnə-)
biological clock See also circadian the branch of biology concerned with the periodicity occurring in living organisms

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

chronobiology chron·o·bi·ol·o·gy (krŏn'ō-bī-ŏl'ə-jē)
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.
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Example sentences for chronobiology
Chronobiology is a branch of biology that studies rhythms in living beings.
Biorhythmics has echoes of chronobiology, the study of biological rhythms.
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