Definition of diurnal
1a : recurring every day diurnal tasksb : having a daily cycle diurnal tides
2a : of, relating to, or occurring in the daytime the city's diurnal noisesb biology : active chiefly in the daytime diurnal animalsc botany : opening during the day and closing at night diurnal flowers
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Examples of diurnal in a Sentence
a love as constant and certain as the diurnal tides
Origin and Etymology of diurnal
Middle English, from Latin diurnalis — more at journal
First Known Use: 14th century
Other Botany Terms
Examples of diurnal in a Sentence
a microfilm containing a collection of diurnals published by 19th-century American abolitionists
Origin and Etymology of diurnal
see 1diurnal
First Known Use: 1600
DIURNAL Defined for English Language Learners
diurnal
playDefinition of diurnal for English Language Learners
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: active mainly during the day
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: happening every day
Medical Dictionary
Learn More about diurnal
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See words that rhyme with diurnal Thesaurus: All synonyms and antonyms for diurnal Spanish Central: Translation of diurnal Nglish: Translation of diurnal for Spanish speakers Britannica English: Translation of diurnal for Arabic speakers
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