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Diurnal

[adj] having a daily cycle or occurring every day; "diurnal rhythms"; "diurnal rotation of the heavens"; "the diurnal slumber of bats"
[adj] (biology) belonging to or active during the day; "diurnal animals are active during the day"; "diurnal flowers are open during the day and closed at night"


Related Information

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Synonyms

cyclic, cyclical

Antonyms

nocturnal