biological clock
noun
: an inherent timing mechanism in a living system that is inferred to exist in order to explain the timing or periodicity of various behaviors and physiological states and processes
Examples of biological clock in a Sentence
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Williams notes that many successful women in their 30s and 40s also feel the biological clock ticking, which makes slowing down seem impossible.
—
Essence, 24 Sep. 2025
Surviving multiple extreme heat events over two years may accelerate a person’s biological clock by about eight to 11 days.2
Heat Waves May Speed Up ‘Biological Clock’
The 15-year study included 24,922 adults in Taiwan and recorded about 30 heat waves during that time.
—Stephanie Brown, Verywell Health, 4 Sep. 2025
In addition to diet choices, a combination of supplements and exercise might also help pump the brakes on your biological clock.
—Sarah Garone, Health, 27 Aug. 2025
If a tiny wasp can hit pause on its biological clock by going into dormancy, maybe there are ways to do something similar in more complex animals.
—Thomas Westerholm, MSNBC Newsweek, 15 Aug. 2025
See All Example Sentences for biological clock
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Essence, 24 Sep. 2025
Surviving multiple extreme heat events over two years may accelerate a person’s biological clock by about eight to 11 days.2
Heat Waves May Speed Up ‘Biological Clock’
The 15-year study included 24,922 adults in Taiwan and recorded about 30 heat waves during that time.
—Stephanie Brown, Verywell Health, 4 Sep. 2025
In addition to diet choices, a combination of supplements and exercise might also help pump the brakes on your biological clock.
—Sarah Garone, Health, 27 Aug. 2025
If a tiny wasp can hit pause on its biological clock by going into dormancy, maybe there are ways to do something similar in more complex animals.
—Thomas Westerholm, MSNBC Newsweek, 15 Aug. 2025
See All Example Sentences for biological clock
Cite this Entry
“Biological clock.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biological%20clock. Accessed 30 Sep. 2025.
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