First Known Use: 1776
Dictionary
nystagmus
noun nys·tag·mus \nis-ˈtag-məs\
Definition of NYSTAGMUS
: a rapid involuntary oscillation of the eyeballs
— nys·tag·mic \-mik\ adjective
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Origin of NYSTAGMUS
New Latin, from Greek nystagmos drowsiness, from nystazein to doze; probably akin to Lithuanian snusti to doze
Medical Dictionary
nystagmus
noun nys·tag·mus \nis-ˈtag-məs\
Medical Definition of NYSTAGMUS
: involuntary usually rapid movement of the eyeballs (as from side to side) occurring normally with dizziness during and after bodily rotation or abnormally following head injury or as a symptom of disease
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