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- Dictionarydiurnal/dʌɪˈəːnl/
adjective
- 1. of or during the day. Similar
- 2. daily; of each day: "diurnal rhythms" Similar
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DIURNAL definition: 1. being active or happening during the day rather than at night: 2. happening over a period of a…. Learn more.
1. a. biology : active chiefly in the daytime. diurnal animals. b. : of, relating to, or occurring in the daytime. the city's diurnal noises. c. botany : opening during the day and closing at night. diurnal flowers. 2. a. : recurring every day. diurnal tasks. b. : having a daily cycle. diurnal tides. diurnally. dī-ˈər-nᵊl-ē. adverb.
noun. a service book containing all the canonical hours except matins. diurnal. / dī-ûr ′ nəl / 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.
The adjective diurnal can be used to describe anything that takes place in the daytime, but it is most often used in the field of biology to describe animals that are active during the day and then sleep at night.
adj. 1. happening during the day or daily. 2. (Botany) (of flowers) open during the day and closed at night. 3. (Zoology) (of animals) active during the day. Compare nocturnal. n. (Roman Catholic Church) a service book containing all the canonical hours except matins. [C15: from Late Latin diurnālis, from Latin diurnus, from diēs day]
of or pertaining to a day or each day; daily. 2. of or belonging to the daytime ( opposed to nocturnal) 3. Botany. showing a periodic alteration of condition with day and night, as certain flowers that open by day and close by night. 4. active by day, as certain birds and insects (opposed to nocturnal) noun.
Diurnal definition: A book containing all the offices for the daily canonical hours of prayer except matins.
adjective. /daɪˈɜːnl/ /daɪˈɜːrnl/ (biology) (of animals) active during the day. Unlike most other bats, this species is diurnal. opposite nocturnal. Want to learn more?
diurnal, nocturnal Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024 British Dictionary definitions for diurnal
Jun 2, 2024 · diurnal (comparative more diurnal, superlative most diurnal) Happening or occurring during daylight, or primarily active during that time. Most birds are diurnal.
