- Of, pertaining to, done or occuring in, the night; as,
nocturnal darkness, cries, expedition, etc.; -- opposed to diurnal. - Having a habit of seeking food or moving about at night;
as, nocturnal birds and insects.
2 . Nocturnal
[ n.]
- An instrument formerly used for taking the altitude of
the stars, etc., at sea.
Meaning of 'nocturnal' (Princeton's WordNet)
1 . nocturnal
[ a]
Meaning (1): - belonging to or active during the night
Example in sentence:
nocturnal animals are active at night;
nocturnal plants have flowers that open at night and close by day
Meaning (2): - of or relating to or occurring in the night