Nocturnal

usgb/nɑːkˈtɜːrnl/Volume
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Night ActivityPlay
Nocturnal refers to being active or occurring in the night, opposed to daytime. SlideThe museum offers nocturnal tours during the summer evenings.
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Human Sleep PatternsPlay
Humans are generally not nocturnal, but some people may work at night or have nocturnal hobbies. SlideSince becoming a security guard, Mark has adapted to a nocturnal schedule.
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Environment AdaptationPlay
Nocturnal creatures are adapted to life in the dark, possibly to avoid predators or the heat. SlideDesert rodents are mostly nocturnal to escape the daytime heat.