nocturnal

英[nɒk'tɜːn(ə)l] 美[nɑk'tɝnl]

1. belonging to or active during the night;

"nocturnal animals are active at night"

"nocturnal plants have flowers that open at night and close by day"

2. of or relating to or occurring in the night;

"nocturnal darkness"

3. of or during or relating to the night;

"a nocturnal journey"

"nocturnal stillness"

"nocturnal predators"