body clock

noun

: the internal mechanisms that schedule periodic bodily functions and activities

—usually not used technically

Examples of body clock in a Sentence

It takes a while for my body clock to get adjusted when I fly from New York to London.

Recent Examples on the Web

Blue light penetrates one millimeter to reduce inflammation and bacteria, and helps your body clock. —Beth Landman, The Hollywood Reporter, 4 Dec. 2024

This wasn’t a 10 a.m. body clock time for the 49ers either, but rather an afternoon slot time that should have prevented their first-half sleep-walking session. —Jerry McDonald, The Mercury News, 24 Nov. 2024

Our body clocks get all messed up, and so do animals. —Sun Sentinel Editorial Board, Sun Sentinel, 16 Mar. 2024

Stanford storylines: The Cardinal look to break a five-game losing streak but need to overcome a fourth trip to the Eastern Time Zone in seven weeks and a 9 a.m. body clock kickoff. —Harold Gutmann, The Mercury News, 2 Nov. 2024

Word History

First Known Use

1916, in the meaning defined above

Medical Definition

body clock

noun

-ˈkläk 

: the internal mechanisms that schedule bodily functions and activities

—not usually used technically