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[skoh-toh-muh] /skoʊˈtoʊ mə/
noun, plural scotomas, scotomata
[skoh-toh-muh-tuh] /skoʊˈtoʊ mə tə/ (Show IPA).
loss of vision in a part of the visual field; blind spot.
Origin of scotoma
1535-45; < Late Latin < Greek skótōma dizziness. See scoto-, -oma
Related forms
[skoh-tom-uh-tuh s] /skoʊˈtɒm ə təs/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for scotoma


noun (pl) -mas, -mata (-mətə)
(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
(psychol) a mental blind spot; inability to understand or perceive certain matters
Derived Forms
scotomatous (skɒˈtɒmətəs) adjective
Word Origin
C16: via Medieval Latin from Greek skotōma giddiness, from skotoun to make dark, from skotos darkness
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for scotoma

(plural scotomata), 1540s, from Late Latin scotoma, from Greek skotoma "dizziness," from skotoun "to darken," from skotos "darkness" (see shade).

Online Etymology Dictionary, © 2010 Douglas Harper
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scotoma in Medicine

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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