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
More recently, scientists who study these body clocks have discovered that the immune system seems to be exquisitely sensitive to timing.
—
Brenda Goodman, CNN Money, 6 Feb. 2026
Reduced sunlight can impact your body’s circadian rhythm — basically, your internal body clock.
—Jacqueline Kilikita, Refinery29, 29 Jan. 2026
In other words, how the light influenced their internal body clocks.
—New Atlas, 17 Jan. 2026
With a weaker circadian rhythm, light and schedule changes are more likely to disrupt the body clock, leading to shifts in sleep and activity patterns.
—Khloe Quill, FOXNews.com, 6 Jan. 2026
See All Example Sentences for body clock
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Brenda Goodman, CNN Money, 6 Feb. 2026
Reduced sunlight can impact your body’s circadian rhythm — basically, your internal body clock.
—Jacqueline Kilikita, Refinery29, 29 Jan. 2026
In other words, how the light influenced their internal body clocks.
—New Atlas, 17 Jan. 2026
With a weaker circadian rhythm, light and schedule changes are more likely to disrupt the body clock, leading to shifts in sleep and activity patterns.
—Khloe Quill, FOXNews.com, 6 Jan. 2026
See All Example Sentences for body clock
Cite this Entry
“Body clock.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/body%20clock. Accessed 14 Feb. 2026.
Copy CitationMedical Definition
body clock
noun
: the internal mechanisms that schedule bodily functions and activities
—not usually used technically
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