Search Result for "scotoma": 
Wordnet 3.0

NOUN (1)

1. an isolated area of diminished vision within the visual field; 



The Collaborative International Dictionary of English v.0.48:

Scotoma \Sco*to"ma\, n. [L.] (Med.)
   Scotomy.
   [1913 Webster]


WordNet (r) 3.0 (2006):

scotoma
    n 1: an isolated area of diminished vision within the visual
         field