Definition, Meaning & Synonyms

diurnal

adjective

/daɪˈɜːrnəl/

Definition

Active during the day; occurring every day.

Examples

The diurnal habits of most birds mean they are best observed in the morning.
Unlike nocturnal creatures, which thrive at night, diurnal species seek out sunlight.

Meaning

The term diurnal is used to describe animals that are active in the daytime and sleep at night. It can also refer to events or occurrences that happen daily.