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.
“Light is the way the internal clock knows what time it is.”
From The Wall Street Journal ● Oct. 5, 2026
Her internal clock, built over millions of years of evolution to tune human biology to the rising and setting of the Sun, is insisting it is morning.
From BBC ● Jul. 19, 2026
However, it adds to growing evidence around chrononutrition, a field that looks at how the body's internal clock influences how food is processed.
From Science Daily ● May 1, 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
X-Ray always said that he’d sleep until noon every day once he was released, but his internal clock was permanently out of whack.
From "Small Steps" by Louis Sachar
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
