Definition of scotoma in English:
 scotoma
nounPlural scotomas, Plural scotomata skə(ʊ)ˈtəʊməskɒˈtəʊməskəˈtoʊmə
Medicine A partial loss of vision or blind spot in an otherwise normal visual field.
 Example sentencesExamples
-  The ability to read with visual aids depends on the size and density of the central scotoma and the degree to which the person retains sensitivity to contrast.
 -  Half of them had clear prodromata, such as scintillating scotomas and sensitivity to odors and noise.
 -  Patients with age-related macular degeneration may complain of acute loss of vision, blurred vision, scotomas or chronic distortion of vision.
 -  The patient performs this test daily at home and is instructed to call the physician if line distortions or scotomas are detected and persist for one or two days.
 -  At each monthly visit patients should be questioned regarding possible visual disturbances including blurred vision or scotomata.
 
 Synonyms
dizziness, light-headedness, loss of balance, loss of equilibrium, spinning of the head, swimming of the head
Origin
  
Mid 16th century (denoting dizziness and dim vision): via late Latin from Greek skotōma, from skotoun 'darken', from skotos 'darkness'.