English adjective: nocturnal | |||
1. | nocturnal belonging to or active during the night | ||
Samples | Nocturnal animals are active at night. Nocturnal plants have flowers that open at night and close by day. | ||
Domain category | biological science, biology | ||
Antonyms | diurnal | ||
2. | nocturnal of or relating to or occurring in the night | ||
Samples | Nocturnal darkness. | ||