Welcome to the new LearnersDictionary.com. We want to hear your thoughts about the new design.

biological clock

1 ENTRIES FOUND:
Save
biological clocknoun
pluralbiological clocks
biological clock
noun
pluralbiological clocks
Learner's definition of BIOLOGICAL CLOCK  
[count]
: a system in the body that controls the occurrence of natural processes (such as waking, sleeping, and aging) — often used to describe a woman's desire to have children before she is too old
Comments & Questions  
Comments & Questions
What made you want to look up biological clock? Include any comments and questions you have about this word.