biological clock


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Related to biological clock: circadian rhythm

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.
a. The time period during which a person who desires to have a biological child, especially a woman approaching the decline of reproductive capability, is still able to do so.
b. The capacity to be fertile, especially in such a woman: She was eager to have a child before her biological clock stopped working.

biological clock

n
1. (Biology) an inherent periodicity in the physiological processes of living organisms that is not dependent on the periodicity of external factors
2. (Biology) the hypothetical mechanism responsible for this periodicity

biolog′ical clock′


n.
1. an innate mechanism of the body that regulates its rhythmic and periodic cycles, as that of sleeping and waking.
2. such a mechanism perceived as inexorably marking the passage of one's youth and esp. one's ability to bear children.
[1950–55]

bi·o·log·i·cal clock

(bī′ə-lŏj′ĭ-kəl)
An internal system of organisms that controls the cycle of various functions, such as sleep cycles in mammals and photosynthesis in plants. See Note at circadian rhythm.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.biological clock - an innate mechanism in living organisms that controls the periodicity of many physiological functionsbiological 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
biológiai óra

biological clock

biological clock

norologio biologico
References in periodicals archive ?
THREE Americans have won the Nobel Prize in Physiology or Medicine for their discoveries about the body's biological clock - opening up new fields of research and raising awareness about the importance of getting enough sleep.
Young for their discoveries of mechanisms for biological clocks, which enabled "a peek inside our biological clock and elucidate its inner workings.
Young "for their discoveries of molecular mechanisms controlling the circadian rhythm" or the biological clock.
The findings provide insight into how the biological clock is regulated and could lead to the development of new therapies for individuals with an altered circadian rhythm, including night shift workers and those suffering from jet lag.
Their new research focuses on the role of melanopsin, a retinal protein, in aspects of unconscious vision that regulate the biological clock.
Explaining the concept of the 'biological clock', Dr Boheira Al Geyoushi, medical director of the clinic, said: "By biological clock we mean the fertility levels of a woman which are measured by the number of eggs her ovaries produce.
It is well known that such working patterns can interfere with the body's circadian rhythm, which is an approximate 24-hour cycle controlled by an internal biological clock.
Gynaecologist Dr Geeta Nargund called on the Government to introduce fertility lessons into the national curriculum so that girls are fully informed about their biological clock.
ISLAMABAD -- Scientists have found a "reset button" for our biological clock, paving the way for more effective treatment of jet lag, the negative health effects of shift work and seasonal affective disorder (SAD).
TEHRAN (FNA)- A biological clock was discovered by researchers that provides vital clues about how long a person is likely to live.
Both theses focused on the correlation between light and health--Bae's "Urban Therapy" explored a side effect of the increasing amount of time spent indoors and natural biological rhythms, and Ryan's "The Impact of Weekly Lighting Condition on Performance, Sleepiness, and Mood" focused on the biological clock over the course of a week.
The Big Lie: Motherhood, Feminism, and the Reality of the Biological Clock

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