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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Then keep bedtime consistent from night to night so their body clock stops fighting the alarm. — Ashley Lynch, Miami Herald, 10 Aug. 2026 Six weeks remain to get those body clocks ready for kickoff in Melbourne, Australia. — Cam Inman, Mercury News, 29 July 2026 Then, sleep strategically to help your body clock reset. — Alesandra Dubin, Southern Living, 23 June 2026 Your circadian rhythm, also known as your internal body clock, largely influences your natural sleep-wake preferences, known as chronotypes. — Olivia McIntosh, Martha Stewart, 19 June 2026 See All Example Sentences for body clock

Word History

First Known Use

1916, in the meaning defined above

Time Traveler
The first known use of body clock was in 1916

Rhymes for body clock

See All Rhymes for body clock

Browse Nearby Words

body checker
body clock
body clothes
See all Nearby Words

Cite this Entry

“Body clock.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/body%20clock. Accessed 13 Aug. 2026.

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Medical Definition

body clock

noun
-ˈkläk How to pronounce body clock (audio)
: the internal mechanisms that schedule bodily functions and activities
—not usually used technically
Last Updated: - Updated example sentences
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