scotoma noun. [skɒ'tǝʊmǝ, skǝ(ʊ)-] Pl. -mas, -mata [-mǝtǝ]. M16.
[Late Latin from Greek skotōma dizziness, from skotoun darken, from skotos darkness.]
Medicine.
1. Dizziness accompanied by dimness of sight. M16-E19.

2. An obscuration of part of the visual field, due to lesion of the retina, the optic nerve, or the ophthalmic centres in the brain. L19.
SCINTILLATING scotoma.

■ scotomatous adjective characterized by or affected by a scotoma or scotomata E20.

■ scotometer noun (Ophthalmology) an instrument for diagnosing and measuring scotomata L19.

■ scoto'metric adjective by means of or pertaining to scotometry M20.

■ scotometry noun the use of a scotometer E20.

■ scotomia noun (Medicine) = SCOTOMA 1 M16.

[TahlilGaran] English Dictionary ▲