Dictionary
noc•tur•nal
Pronunciation: (nok-tûr'nl), [key]—
adj.
1. of or pertaining to the night (opposed to
diurnal).
2. done, occurring, or coming at night:
nocturnal visit.
3. active at night (opposed to
diurnal):
nocturnal animals.
4. opening by night and closing by day, as certain flowers (opposed to
diurnal).
—
n.
Archaic.an astrolabe for telling time at night or for determining latitude by the position of certain stars in reference to Polaris.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.