Relating to, occurring during, or resembling twilight or the dim light of dawn and dusk.
From Latin 'crepusculinus' (of twilight), derived from 'crepusculum.' The suffix '-ine' forms an adjective indicating relationship or belonging to.
Crepusculine animals—like deer, rabbits, and many insects—are actually more active in twilight than at night, timing their feeding when predators have poor vision but it's not so dark they can't see danger coming.
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