monochromatism

noun
mono·chro·ma·tism | \-ˈkrō-mə-ˌti-zəm \

Definition of monochromatism 

: complete color blindness in which all colors appear as shades of gray

First Known Use of monochromatism

1893, in the meaning defined above

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The first known use of monochromatism was in 1893

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monochromatism

noun
mono·chro·ma·tism | \-ˈkrō-mə-ˌtiz-əm \

Medical Definition of monochromatism 

: complete color blindness in which all colors appear as shades of gray

called also monochromacy

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