Medical term:
nocturnal
noc·tur·nal
(nok-ter'năl),Pertaining to the hours of darkness; opposite of diurnal (1).
[L. nocturnus, of the night]
Farlex Partner Medical Dictionary © Farlex 2012
nocturnal
(nŏk-tûr′nəl)adj.
1. Of, relating to, or occurring in the night: nocturnal stillness.
2. Zoology Most active at night: nocturnal lizards.
noc·tur′nal·ly adv.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
noc·tur·nal
(nok-tŭr'năl)Pertaining to the hours of darkness; opposite of diurnal (1).
[L. nocturnus, of the night]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
nocturnal
pertaining to the night.Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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