diurnal

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.

In studies involving mice, Borniger's lab discovered that breast cancer interferes with normal diurnal rhythms, meaning the natural day and night cycle of stress hormone release.

From Science Daily • Jan. 18, 2026

It is not rare in spring to have a large diurnal range but it is unusual just how dry and sunny it has been lately.

From BBC • Apr. 11, 2025

Wilder’s drama, offering a guided tour of an ordinary town going about its diurnal business, reminds us, through the inescapable shadow of mortality, of what we have in common.

From Los Angeles Times • Nov. 12, 2024

Yellow-bellied marmots are an excellent study system because they are diurnal, or active during the day, and they have an address.

From Salon • Oct. 23, 2024

They trade normal diurnal rhythms for the perk of having very little inmate contact—at night, all the inmates are locked in their cells.

From "Newjack: Guarding Sing Sing" by Ted Conover