nystagmus noun. [nɪ'stagmǝs] E19.
[mod. Latin from Greek nustagmos nodding, drowsiness, from nustazein nod, be sleepy.]
Medicine. A rapid involuntary, usu. lateral, oscillation of the eyeball.

■ nystagmic adjective L19.

■ nystagmoid adjective designating jerking movements of the eyes when tired L19.

■ nystagmo'graphic adjective of or pertaining to nystagmography M20.

■ nystag'mography noun recording of nystagmic movements of the eyeball E20.

[TahlilGaran] English Dictionary ▲