Synonyms of diurnal in English:

diurnal


See US English definition of diurnal

See UK English definition of diurnal

See Spanish definition of diurno

adjective

1‘the patient's mood is determined by diurnal events’

SYNONYMS
daily, everyday, day-to-day, quotidian
occurring every day, occurring each day
technical circadian

2‘flight demands good eyesight, so birds tend to be diurnal’

SYNONYMS
active during the day, non-nocturnal
daytime