Diurnal GRE Vocabulary Flashcard
/ˌdaɪˈɜː.nəl/ (adj)
Definition
happening or being active during the day, daily, daytime, daylight – circadian, quotidian
Example
Diurnality is a form of plant or 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”. The timing of activity by an animal depends on a variety of environmental factors such as the temperature, the ability to gather food by sight, the risk of predation, and the time of year. Diurnality is a cycle of activity within a 24-hour period; cyclic activities called circadian rhythms are endogenous cycles not dependent on external cues or environmental factors except for a zeitgeber. Animals active during twilight are crepuscular, those active during the night are nocturnal, and animals active at sporadic times during both night and day are cathemeral.
Source: https://en.wikipedia.org/
Antonyms
nocturnal, nightly
Parts of speech
Adverb: diurnally
Noun: diurnality
