DIURNAL


Meaning of DIURNAL in English

[adjective] [not gradable] [specialized] - happening over a period of a day, or being active or happening during the day rather than at nightDesert plants, faced with severe diurnal temperature fluctuations and acute water shortage, only grow very slowly.Are any owls diurnal (= active during the day), or are they all nocturnal?Compare nocturnal.

Cambridge English vocab.      Кембриджский английский словарь.