di· ur· nal dī-ˈər-nᵊl 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 …

Relating to or occurring in a 24-hour period; daily. 2. Occurring or active during the daytime rather than at night: diurnal animals. 3. Botany Opening during daylight hours and closing at night. n. 1. A book containing all the offices for the daily canonical hours of prayer except matins. 2.

1. : active mainly during the day. diurnal animals. — opposite nocturnal. 2. : happening every day. diurnal tides.

diurnal adjective uk / ˌdaɪˈɜː.n ə l / us / ˌdaɪˈɝː.n ə l / biology specialized being active or happening during the day rather than at night: The Ethiopian wolf is mostly diurnal, but …

of or relating to a day or each day; daily. of or belonging to the daytime (opposed to nocturnal ). Botany. showing a periodic alteration of condition with day and night, as certain flowers that …

See Definition diurnal 1 of 2 adjective as in daily occurring, done, produced, or appearing every day a love as constant and certain as the diurnal tides Synonyms & Similar Words Relevance daily continuous recurrent quotidian periodic day-to-day cyclic recurring continual intermittent cyclical regular perpetual frequent continued incessant

diurnal adjective us / ˌdaɪˈɝː.n ə l / uk / ˌdaɪˈɜː.n ə l / biology specialized being active or happening during the day rather than at night: The Ethiopian wolf is mostly diurnal, but …

Daily; recurring every day; performed in a day; going through its changes in a day; constituting the measure of a day; as, a diurnal fever; a diurnal task; diurnal aberration, or diurnal parallax; the diurnal revolution of the earth. A daybook; a journal. A diurnal bird or insect.

Diurnal temperature variation, a cycle of daily temperature change; Astronomy. Diurnal arc, the time (expressed in right ascension) that it takes a planet etc. to move from its rising to its setting point; Diurnal motion, the apparent motion of stars around the Earth; Astrology. Diurnal chart, a chart for a given date, based on the natal chart

Part of speech: Adjective. Pertaining to the daytime . Usage examples for "diurnal": The arrival of her diurnal basket of provisions offered a refreshing intervention of the commonplace . - "The Complete Project Gutenberg Works of George Meredith", George Meredith.