nystagmoidadj.
/nʌɪˈstaɡmɔɪd/, /nᵻˈstaɡmɔɪd/, U.S. /naɪˈstæɡˌmɔɪd/, /nəˈstæɡˌmɔɪd/ Medicine.
Resembling nystagmus.
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nystagmic1878
nystagmoid1895
nystagmiform1899
optokinetic1925
opticokinetic1946
oculogyric1977
1895 Philos. Trans. 1894 (Royal Soc.) B. 185 750 Slight nystagmoid movements were observed in the eyes.
1899 T. C. Allbutt et al. Syst. Med. VII. 68 Such phenomena we are in the habit of calling ‘nystagmoid’ jerks or movements, as opposed to the spontaneous nystagmus which requires no such devices to call it forth.
1910 Albutt's Syst. Med. VII. 334 Some would restrict the name [nystagmus] to the regular oscillations, distinguishing as ‘nystagmoid’ those that are irregular. But it is usual to call all forms nystagmus.
1964 S. Duke-Elder Parsons' Dis. Eye (ed. 14) xxix. 469 Nystagmoid jerks—larger rhythmic jerking movements, most pronounced at the extreme limits of the normal movements of the eyes—should be distinguished from true nystagmus.
1981 Science 7 Aug. 679/3 Four types of eye movement were recognized:..Type IV—repetitive or nystagmoid deviations.
2000 J. L. Andreassi Psychophysiol. (ed. 4) xii. 276 Periods of rapid nystagmoid eye movements, called eye bursts, occur during REM sleep and have been related to orientation to dream content.
This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022).
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adj.1895