( a. )
Relating to the daytime; belonging to the period of daylight, distinguished from the night; -- opposed to nocturnal; as, diurnal heat; diurnal hours.
( a. )
Relating to the daytime; belonging to the period of daylight, distinguished from the night; -- opposed to nocturnal; as, diurnal heat; diurnal hours.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012