nystagmus Hear it!

nystagmus definition

nys·tag·mus (ni stag′məs)

noun

an involuntary, rapid movement of the eyeball, usually from side to side

Etymology: ModL < Gr nystagmos, drowsiness < nystazein, to be sleepy < IE base *sneud-, to sleep

Related Forms:

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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