Synonyms of diurnal

Adjective

1. diurnal (vs. nocturnal)

usage: of or 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"; "diurnal and nocturnal offices"

2. diurnal, periodic (vs. aperiodic), periodical

usage: having a daily cycle or occurring every day; "diurnal rotation of the heavens"

Definition and meaning of diurnal (Dictionary)