biological clock

1. 1.

   an innate mechanism in living organisms that controls the periodicity of many physiological functions

   Broadermechanism

Questions about biological clock

What does biological clock mean?

biological clock means "an innate mechanism in living organisms that controls the periodicity of many physiological functions".

Is biological clock a common word?

biological clock is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.