noun, plural scotomas, scotomata [skoh-toh-muh-tuh] . Pathology.
loss of vision in a part of the visual field; blind spot.

1535–45; < Late Latin < Greek skótōma dizziness. See scoto-, -oma

scotomatous [skoh-tom-uh-tuhs] , adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
scotoma (skɒˈtəʊmə)
n , pl -mas, -mata
1.  pathol a blind spot; a permanent or temporary area of depressed or absent vision caused by lesions of the visual system, viewing the sun directly (eclipse scotoma), squinting, etc
2.  psychol a mental blind spot; inability to understand or perceive certain matters
[C16: via Medieval Latin from Greek skotōma giddiness, from skotoun to make dark, from skotos darkness]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

scotoma sco·to·ma (skə-tō'mə)
n. pl. sco·to·mas or sco·to·ma·ta (-mə-tə)

  1. An area of diminished vision within the visual field.

  2. See blind spot.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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