— USA ... in the meaning defined at sense 2. ... pet dealers are required to regularly groom animals to prevent matting and flea and tick infestations and provide animals with diurnal lighting cycles, which mimic natural, 24-hour light patterns. Diurnal definition is - active chiefly in the daytime.
diurnal synonyms, diurnal pronunciation, diurnal translation, English dictionary definition of diurnal. Enrich your vocabulary with the English Definition dictionary Animals with the opposite schedule are said to be nocturnal, which means they’re active at night and sleep in the daytime. 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.

diurnal animals definition in English dictionary, diurnal animals meaning, synonyms, see also 'diurnal parallax',diurnally',dural',diurnal parallax'. 2. See more. adj. Diurnal definition, of or relating to a day or each day; daily. ‘Her diurnal ritual of hurriedly brushing her hair before the mirror expands to one of self-admiration.’ ‘They have their own diurnal cycles, pegged to alien time-frames.’ ‘Today FM, for example, operates to a finely calibrated diurnal rhythm, carefully tuned to the mood of its audience.’ Define diurnal. 1. There are many mammals which are diurnal, meaning they are active during the day. diurnal meaning, definition, what is diurnal: happening or active in the daytime: Learn more. DIURNAL Meaning: "daily, happening every day," from Late Latin diurnalis "daily," from Latin dies "day" + -urnus, an… See definitions of diurnal. nocturnal: 1 adj belonging to or active during the night “ nocturnal animals are active at night” “ nocturnal plants have flowers that open at night and close by day” Antonyms: diurnal of or belonging to or active during the day adj of or relating to or occurring in the night “ nocturnal darkness” Enrich your vocabulary with the English Definition dictionary Like crepuscular and nocturnal animals, the daily patterns of diurnal animals are established through circadian rhythms, patterns built into their body chemistry. ... TMC happening every day Examples from the Corpus diurnal • The plains have a wide range of diurnal and annual temperatures.
(adjective) Diurnal describes birds and other animals that are principally active during the day with all major life activities, including courtship, nesting, feeding, preening, and other behaviors.Most species of birds, including songbirds, hummingbirds, and waterfowl are considered diurnal. Animals who are active during the day are known as diurnal. diurnal: [ di-er´nal ] pertaining to or occurring during the daytime, or period of light. Learn more. diurnal animals definition in English dictionary, diurnal animals meaning, synonyms, see also 'diurnal parallax',diurnally',dural',diurnal parallax'.