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Definitions

internal clock

NOUN
biological rhythm
Synonyms




Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Almost all cells in the body contain their own internal clock, which can be influenced by light, physical activity, and food timing.

From Science Daily • Jan. 3, 2026

When it is bright, our internal clock feels we should be awake.

From BBC • Apr. 16, 2025

You really have to be thoughtful of your act structures and that internal clock.

From Salon • Aug. 12, 2024

“There are gonna be some people that wake up at 3 in the morning, probably wide awake. Everybody’s internal clock is different. But we’re doing everything we can.”

From Los Angeles Times • Mar. 15, 2024

His listen-and-learn switch had been turned on, and his own internal clock was ticking.

From "The View From Saturday" by E.L. Konigsburg