internal clock
Americannoun
Etymology
Origin of internal clock
First recorded in 1955–60
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.
A later activity peak may reflect a mismatch between the body's internal clock and environmental signals such as daylight and darkness.
From Science Daily • Jan. 3, 2026
Prof Luscher said that - like the researchers suggest - it is "possible" that coffee drinking later in the day could disrupt out bodies internal clock at a time we should be resting.
From BBC • Jan. 8, 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
Either by his internal clock or Chubs’s excited squeaks, Liam woke first.
From "The Darkest Minds" by Alexandra Bracken
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
