nodding(redirected from Nod (gesture))
Also found in: Dictionary, Thesaurus, Wikipedia.
Aetiology Sleep deprivation, mental fatigue, sleep apnea, hypoxia, narcolepsy, or hypersomnia
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
Involuntary motion of the head downward, as when momentarily dozing.
Medical Dictionary, © 2009 Farlex and Partners