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
My internal clock wherever I am just knows it’s 4 p.m. and I get a little sad.
From Los Angeles Times ● Jul. 25, 2025
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
Dad had jumbled my internal clock, thanks to our late-night marathon of Doctor Who—my favorite episodes with the brilliant and brave Martha Jones.
From "Sir Fig Newton and the Science of Persistence" by Sonja Thomas
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.
