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DIURNAL

Definition:

1. [adjective] 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"
   
   
2. [adjective] having a daily cycle or occurring every day; "diurnal rhythms"; "diurnal rotation of the heavens"; "the diurnal slumber of bats"
   
   

Synonyms:

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