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diurnal
[ dahy-ur-nl ]
adjective
- of or relating to a day or each day; daily.
- of or belonging to the daytime ( nocturnal ).
- Botany. showing a periodic alteration of condition with day and night, as certain flowers that open by day and close by night.
- active by day, as certain birds and insects ( nocturnal ).
noun
- Liturgy. a service book containing offices for the daily hours of prayer.
- Archaic. a diary.
- Archaic. a newspaper, especially a daily one.
diurnal
/ 岹ɪˈɜːə /
adjective
- happening during the day or daily
- (of flowers) open during the day and closed at night
- (of animals) active during the day Compare nocturnal
noun
- a service book containing all the canonical hours except matins
diurnal
- Occurring once in a 24-hour period; daily.
- Having a 24-hour cycle. The movement of stars and other celestial objects across the sky are diurnal.
- Most active during the daytime. Many animals, including the apes, are diurnal.
- Having leaves or flowers that open in daylight and close at night. The morning glory and crocus are diurnal.
- Compare nocturnal
Derived Forms
- 徱ˈܰԲ, adverb
Other Word Forms
- 徱·ܰn· adverb
- 徱·ܰn·Ա noun
- ٰԲd·ܰn adjective
- ܲd·ܰn adjective
- un徱·ܰn· adverb
Word History and Origins
Word History and Origins
Origin of diurnal1
Example Sentences
It is not rare in spring to have a large diurnal range but it is unusual just how dry and sunny it has been lately.
Despite the warmth in the daytime, this has been at odds with the night-time temperatures with a huge difference between - what weather forecasters call diurnal range.
Wilder’s drama, offering a guided tour of an ordinary town going about its diurnal business, reminds us, through the inescapable shadow of mortality, of what we have in common.
Yellow-bellied marmots are an excellent study system because they are diurnal, or active during the day, and they have an address.
The 12 diurnal tiger beetle species that the researchers included in the study are evidence of this.
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