Nystagmus Definition

nĭ-stăgməs
noun
Involuntary, rapid movement of the eyeball, usually from side to side.
Webster's New World
Nystagmus is a rapid and involuntary eye movement that can result in sight problems.
An example of nystagmus is when the eyeball suddenly moves from side to side by itself.
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Other Word Forms of Nystagmus

Noun

Singular:
nystagmus
Plural:
nystagmuses

Origin of Nystagmus

  • First attested in 1798. From New Latin nystagmus, from Ancient Greek νυσταγμός (nustagmos, “nodding, drowsiness"), from νυστάζω (nustazō, “nod, be sleepy").

    From Wiktionary

  • New Latin from Greek nustagmos drowsiness

    From American Heritage Dictionary of the English Language, 5th Edition

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