diurnal
Pronunciation: /dʌɪˈəːn(ə)l/
Definition of diurnal
adjective
Origin:
late Middle English (as a term in astronomy): from late Latin diurnalis, from Latin diurnus 'daily', from dies 'day'
late Middle English (as a term in astronomy): from late Latin diurnalis, from Latin diurnus 'daily', from dies 'day'