- (a.) Of, pertaining to, done or occuring in, the night; as, nocturnal darkness, cries, expedition, etc.; -- opposed to diurnal.
- (n.) An instrument formerly used for taking the altitude of the stars, etc., at sea.
- (a.) Having a habit of seeking food or moving about at night; as, nocturnal birds and insects.
- (n.) An instrument formerly used for taking the altitude of the stars, etc., at sea.
- (a.) Having a habit of seeking food or moving about at night; as, nocturnal birds and insects.
- (a.) Of, pertaining to, done or occuring in, the night; as, nocturnal darkness, cries, expedition, etc.; -- opposed to diurnal.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). nocturnal. Retrieved September 27, 2026, from http://smartdefine.org/nocturnal/definitions/2036965 |
| Chicago | Webster's. 2011. "nocturnal" http://smartdefine.org/nocturnal/definitions/2036965 (accessed September 27, 2026). |
| Harvard | Webster's 2011, nocturnal, Smart Define, viewed 27 September, 2026, <http://smartdefine.org/nocturnal/definitions/2036965>. |
| MLA | Webster's. "nocturnal" 27 May 2011. Web. 27 September 2026. <http://smartdefine.org/nocturnal/definitions/2036965> |