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diurnal
01
primarily active or occurring during the daytime
Examples
Most birds are diurnal, chirping and foraging for food as soon as the sun rises.
Diurnal animals, such as squirrels and deer, are often seen during daylight hours, foraging and interacting in their natural habitats.
02
having a cycle that happens on a daily basis
Examples
The diurnal pattern of the flower's blooming happens every morning.
Humans have a diurnal rhythm that follows a daily sleep-wake cycle.
