What does it mean when someone is nocturnal?
Sarah Martinez
Updated on March 29, 2026
If something is nocturnal, it belongs to or is active at night. The adjective nocturnal comes from the Late Latin nocturnalis, which means “belonging to the night.” You’ve probably heard of nocturnal animals, like bats and fireflies, who sleep during the day and come out to play when the sun goes down.
What does the word camouflage?
1 : the hiding or disguising of something by covering it up or changing the way it looks The leopard has spots for camouflage. 2 : something (as color or shape) that protects an animal from attack by making it difficult to see in the area around it. camouflage. verb. camouflaged; camouflaging.
What’s another word for nocturnal?
In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for nocturnal, like: nighttime, nightly, crepuscular, solitary, night, at-night, night-loving, diurnal, daytime, late and light.
What is nocturnal example?
The definition of nocturnal is something that is active or happens during the night. An example of a nocturnal animal is a bat.
Are humans nocturnal or diurnal?
Humans are a diurnal species, meaning that we are generally active during the day and sleep at night. Some individuals feel more awake, alert, and able to do their best work in the morning. We typically refer to these people as “larks,” or morning-type individuals.
What is the synonym of camouflage?
cloak, disguise, mask, veil, conceal, cover, cover up, hide, obscure, beard, blind, concealment, deceit, dissimulation, faking, front, guise, masquerade, mimicry, paint.
Why do humans have no fur?
A new study suggests that humans became hairless to reduce the risk of biting flies and other parasites that live in fur and to enhance their sexual attractiveness. Humans are rare among mammals for their lack of a dense layer of protective fur or hair.
What is the medical definition of nocturnal?
Medical Definition of nocturnal 1 : of, relating to, or occurring at night nocturnal myoclonus 2 : characterized by nocturnal activity a nocturnal form of filariasis
What are the reasons why some animals are nocturnal?
1 Resource competition. Honey Badger, a Nocturnal animal. 2 Predation. Echolocating bats adjust their vocalizations to catch insects against a changing environmental background. 3 Water conservation. Another reason for nocturnality is avoiding the heat of the day.
What is the origin of the word night?
Middle English, borrowed from Anglo-French & Late Latin; Anglo-French nocturnel, borrowed from Late Latin nocturnālis “for night use,” from Latin nocturnus “of or occurring at night” (from noct-, nox night entry 1 + -urnus, temporal suffix, as in diurnus “of the day”) + -ālis -al entry 1 — more at journal