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单词 nystagmus
释义

WordReference Random House Unabridged Dictionary of American English © 2024
nys•tag•mus  (ni stagməs),USA pronunciation n. 
  1. Physiology, Ophthalmologya congenital or acquired persistent, rapid, involuntary, and oscillatory movement of the eyeball, usually from side to side.
  • Greek nystagmós nodding, derivative of nystázein to nod
  • Neo-Latin
  • 1815–25
nys•tagmic, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::
nystagmus /nɪˈstæɡməs/ n
  1. involuntary movement of the eye comprising a smooth drift followed by a flick back, occurring in several situations, for example after the body has been rotated or in disorders of the cerebellum
Etymology: 19th Century: New Latin, from Greek nustagmos
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