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
Our bodies run on an internal clock that regulates metabolism, hormone release, and heart function across the 24-hour day, according to Angel Planells, MS, RDN, a spokesperson for the Academy of Nutrition and Dietetics who was not involved in the studysaid.
—
Mira Miller, Verywell Health, 3 Mar. 2026
Whether it was intended or not, the early pressure caused Maye’s internal clock to speed up for the rest of the game.
—Jacob Robinson, New York Times, 13 Feb. 2026
The sleepy cues are managed by your circadian rhythm, or your body's internal clock.
—Andee Tagle, NPR, 15 Jan. 2026
The body's internal clock influences many processes, including digestion, hormone release and metabolism, according to research.
—Khloe Quill, FOXNews.com, 22 Dec. 2025
See All Example Sentences for internal clock
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Mira Miller, Verywell Health, 3 Mar. 2026
Whether it was intended or not, the early pressure caused Maye’s internal clock to speed up for the rest of the game.
—Jacob Robinson, New York Times, 13 Feb. 2026
The sleepy cues are managed by your circadian rhythm, or your body's internal clock.
—Andee Tagle, NPR, 15 Jan. 2026
The body's internal clock influences many processes, including digestion, hormone release and metabolism, according to research.
—Khloe Quill, FOXNews.com, 22 Dec. 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 10 Mar. 2026.
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