Alphabet Filter:


Definition of nocturnal:

  1. An instrument formerly used for taking the altitude of the stars, etc., at sea.
  2. Having a habit of seeking food or moving about at night; as, nocturnal birds and insects.
  3. Of, pertaining to, done or occuring in, the night; as, nocturnal darkness, cries, expedition, etc.; - opposed to diurnal.


nightly, night-loving, nighttime, light, night, late.

Usage examples: