nystagmus Meaning, Definition & Usage

  1. noun involuntary movements of the eyeballs; its presence or absence is used to diagnose a variety of neurological and visual disorders

WordNet


Nys*tag"mus noun
Etymology
NL., fr. Gr. drowsiness, fr. to nod in sleep, to slumber.
Definitions
  1. (Med.) A rapid involuntary oscillation of the eyeballs.

Webster 1913