nystagmus


nys·tag·mus

noun \nis-ˈtag-məs\

Definition of NYSTAGMUS

:  a rapid involuntary oscillation of the eyeballs
nys·tag·mic \-mik\ adjective

Origin of NYSTAGMUS

New Latin, from Greek nystagmos drowsiness, from nystazein to doze; probably akin to Lithuanian snusti to doze
First Known Use: 1776

nys·tag·mus

noun \nis-ˈtag-məs\   (Medical Dictionary)

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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