Webster's Revised Unabridged Dictionary · 1913

Scotomy

Scotomy , noun

[New Latin scotomia, from Greek {not transcribed} dizziness, from {not transcribed} to darken, from sko`tos darkness: compare French scotomie.]

1.
Dizziness with dimness of sight. [Obsolete] — Massinger
2.
(Medicine) Obscuration of the field of vision due to the appearance of a dark spot before the eye.