noun
genetic inability to distinguish differences in hue
• Derivationally related forms: ↑colour-blind, ↑color-blind
• Hypernyms:
↑visual impairment, ↑visual defect, ↑vision defect, ↑visual disorder, ↑birth defect, ↑congenital anomaly, ↑congenital defect, ↑congenital disorder, ↑congenital abnormality
• Hyponyms:
↑dichromacy, ↑dichromatism, ↑dichromatopsia, ↑dichromia, ↑dichromasy, ↑monochromacy, ↑monochromatism, ↑monochromatic vision, ↑monochromia, ↑monochromasy
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noun : the state of being color-blind : inability or marked difficulty in distinguishing chromatic color — compare chromatic vision; dichromatism, monochromatism, trichromatism
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1. inability to distinguish one or several chromatic colors, independent of the capacity for distinguishing light and shade.
2. complete inability to distinguish colors of the spectrum, with all objects appearing as shades of gray, black, and white, varying only as to lightness and darkness; achromatopsia.
[1835-45]
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color blindness, or col|or-blind|ness «KUHL uhr BLYND nihs», noun.
a visual inherited defect, consisting of an inability to tell certain colors apart or to perceive certain colors (usually red and green, sometimes blue and yellow).
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color blindness (US) (or Brit colour blindness) noun [noncount]
He has a common form of color blindness.
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Main Entry: ↑color-blind
Useful english dictionary. 2012.