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Definitions

circadian

[sur-kay-dee-uhn] / sɜrˈkeɪ di ən /


Example Sentences

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Andrew McHill, Ph.D., a study co-author and associate professor specializing in sleep and circadian physiology at OHSU, said the findings strengthen existing evidence that the timing of everyday activities can have important health consequences.

From Science Daily ● Oct. 15, 2026

To protect his circadian rhythm, he wears red-light glasses every night as he winds down before bed.

From The Wall Street Journal ● Oct. 8, 2026

More studies will be needed to determine exactly how circadian rhythms, glymphatic function, and inflammation influence one another after stroke.

From Science Daily ● Sep. 28, 2026

Seeing bright light in the morning, which is good for regulating your circadian rhythm - that is, your body's natural clock.

From BBC ● Sep. 3, 2026

Not only was this arrangement bad for the astronaut’s circadian rhythm, but the astronaut who was on duty made enough noise as he went about his work to keep his partner awake.

From "Flying to the Moon: An Astronaut's Story" by Michael Collins


Vocabulary lists containing circadian

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