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biological clock
(redirected from Biological clocks)

   Also found in: Medical, Encyclopedia, Wikipedia, Hutchinson 0.14 sec.
biological clock
n.
1. An internal mechanism in organisms that controls the periodicity of various functions or activities, such as metabolic changes, sleep cycles, or photosynthesis.
2. The progression or time period from puberty to menopause, marking a woman's ability to bear children.

biological clock
Noun
an inherent timing mechanism that controls the rhythmic repetition of processes in living organisms, such as sleeping

biological clock  (b-lj-kl)
An internal system that controls an organism's circadian rhythms, the cycles of behavior that occur regularly in a day. In mammals, the biological clock is located near the point in the brain where the two optic nerves cross. In many birds, the biological clock is located in the pineal gland. In protists and fungi, the individual cells themselves regulate circadian rhythms.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.biological clock - an innate mechanism in living organisms that controls the periodicity of many physiological functions
mechanism - a natural object resembling a machine in structure or function; "the mechanism of the ear"; "the mechanism of infection"
Translations
biological clock nreloj m biológico
biological clock nhorloge f physiologique
biological clock biological nbiologische Uhr f
biological clock norologio biologico


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? Mentioned in ? References in periodicals archive
 
More women in their 30s and 40s, hearing their biological clocks, are choosing to give birth despite their single status.
Jeremy doesn't buy into the Gay Curse but feels straight men have more incentive to get serious with women because of the ticking of their biological clocks.
The team determined that more than half the study participants routinely go to bed at least 2 hours later or wake at least 2 hours earlier than the times set by their biological clocks.
 
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