| a. | 1. | Of, pertaining to, done or occuring in, the night; |
| 2. | Having a habit of seeking food or moving about at night; | |
| n. | 1. | An instrument formerly used for taking the altitude of the stars, etc., at sea. |
| Adj. | 1. | nocturnal - 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" Antonyms: diurnal - belonging to or active during the day; "diurnal animals are active during the day"; "diurnal flowers are open during the day and closed at night" |
| 2. | nocturnal - of or relating to or occurring in the night; "nocturnal darkness" | |
| 3. | nocturnal - of or during or relating to the night; "a nocturnal journey"; "nocturnal stillness"; "nocturnal predators" |
About this site and copyright information - Online Dictionary Home