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monochromatism

[mon-uh-kroh-muh-tiz-uh m] /ˌmɒn əˈkroʊ məˌtɪz əm/
noun
1.
the quality of having one color:
the monochromatism of Picasso's Blue Period.
2.
Ophthalmology. a defect of vision in which the retina fails to perceive color.
Compare dichromatism (def 2), trichromatism (def 3).
Also, monochromasia
[mon-uh-kroh-mey-zhuh, ‐zee-uh, ‐shuh, ‐shee-uh] /ˌmɒn ə kroʊˈmeɪ ʒə, ‐zi ə, ‐ʃə, ‐ʃi ə/ (Show IPA),
monochromacy.
Origin
1860-1865
1860-65; mono- + chromatism
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for monochromacy

monochromatism

/ˌmɒnəʊˈkrəʊməˌtɪzəm/
noun
1.
a visual defect in which all colours appear as variations of a single hue
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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monochromacy in Medicine

monochromatism mon·o·chro·ma·tism (mŏn'ə-krō'mə-tĭz'əm)
n.

  1. The state of having or exhibiting only one color.

  2. See achromatopsia.

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