The meaning of DIURNAL is active chiefly in the daytime. How to use diurnal in a sentence.

DIURNAL definition: of or relating to a day or each day; daily. See examples of diurnal used in a sentence.

Diurnality is a form of plant and animal behavior characterized by activity during daytime, with a period of sleeping or other inactivity at night. The common adjective used for daytime activity is " diurnal ".

DIURNAL meaning: 1. being active or happening during the day rather than at night: 2. happening over a period of a…. Learn more.

4 meanings: 1. happening during the day or daily 2. (of flowers) open during the day and closed at night 3. (of animals) active.... Click for more definitions.

Define diurnal. diurnal synonyms, diurnal pronunciation, diurnal translation, English dictionary definition of diurnal. adj. 1. Relating to or occurring in a 24-hour period; daily.

Definition of diurnal adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.