¹ Source: wiktionary.com
Medical Definition of Biological clocks
1. The physiological mechanisms that govern the rhythmic occurrence of certain biochemical, physiological, and behavioural phenomena in plants and animals. The pineal gland, which receives input from the optic nerves and connects to the hypothalamus, may be the biological clock in humans. (12 Dec 1998)
Lexicographical Neighbors of Biological Clocks
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