Dictionary
biological clock
noun
: a system in the body that controls the occurrence of natural processes (such as waking, sleeping, and aging)
Full Definition of BIOLOGICAL CLOCK
: 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
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First Known Use of BIOLOGICAL CLOCK
1955
Medical Dictionary
biological clock
noun
Medical Definition of BIOLOGICAL CLOCK
: an inherent timing mechanism in a living system (as a cell) that is inferred to exist in order to explain various cyclical behaviors and physiological processes
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