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

The 49ers have been Down Under for more than a week, adjusting their body clocks in the traditional manner and winning over thousands of Aussie fans who appreciate their commitment to the historic moment. — ABC News, 9 Sep. 2026

For the last few weeks, the Rams have practiced in the late afternoon, which aligns body clock-wise with their impending morning kickoff in Melbourne. — Gary Klein, Los Angeles Times, 8 Sep. 2026

Confining food intake to a consistent daytime window also synchronizes your peripheral metabolic clocks (body clocks in almost every organ) with your central circadian clock, which maintains your sleep cycle. — Teresa Maalouf, Verywell Health, 30 Aug. 2026

Then keep bedtime consistent from night to night so their body clock stops fighting the alarm. — Ashley Lynch, Miami Herald, 10 Aug. 2026

Word History

First Known Use

1916, in the meaning defined above

Rhymes for body clock

• aftershock
• antiknock
• arawak
• hollyhock
• interlock
• manioc
• shuttlecock
• tomahawk
• weathercock
• alcock
• beanstalk
• bedrock

Medical Definition

body clock

noun

-ˈkläk 

: the internal mechanisms that schedule bodily functions and activities

—not usually used technically