internal clock
noun
1
: a system in the body that controls when a person needs to sleep, eat, etc.
The long trip upset my internal clock and I had a hard time getting to sleep.
2
: a clock or timing device that is inside a computer
Examples of internal clock in a Sentence
Recent Examples on the Web
Your circadian rhythm is your body’s internal clock.
—
Gina Park, CNN Money, 8 Dec. 2025
Secondarily, McDaniels has refined his internal clock and use of cadence.
—Andrew Callahan, Boston Herald, 27 Nov. 2025
Researchers debate whether animals rely on a single internal clock or multiple overlapping ones.
—Aamir Khollam, Interesting Engineering, 17 Nov. 2025
By calming the nervous system, research shows that Swedish massage also plays a role in regulating the body’s internal clock – encouraging deeper, more restorative sleep cycles.
—Daryl Austin, USA Today, 13 Nov. 2025
See All Example Sentences for internal clock
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Gina Park, CNN Money, 8 Dec. 2025
Secondarily, McDaniels has refined his internal clock and use of cadence.
—Andrew Callahan, Boston Herald, 27 Nov. 2025
Researchers debate whether animals rely on a single internal clock or multiple overlapping ones.
—Aamir Khollam, Interesting Engineering, 17 Nov. 2025
By calming the nervous system, research shows that Swedish massage also plays a role in regulating the body’s internal clock – encouraging deeper, more restorative sleep cycles.
—Daryl Austin, USA Today, 13 Nov. 2025
See All Example Sentences for internal clock
Cite this Entry
“Internal clock.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/internal%20clock. Accessed 20 Dec. 2025.
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