dichromatism

di·chro·ma·tism  (d-krm-tzm) also di·chro·mism (-mzm)

n.

1. The quality or condition of being dichromatic.

2. Pathology A form of colorblindness in which only two of the three fundamental colors can be distinguished due to a lack of one of the cone pigments.

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dichromatism

1. the quality of being dichromatic, or having two colors.
2. a form of color blindness in which the sufferer can perceive only two of the three primary colors and their variants. — dichromatic, adj.

See also: Color

Thesaurus

Noun

1.

dichromatism - a deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light (as opposed to the three wavelengths needed by people with normal color vision) dichromacy, dichromasy, dichromatopsia, dichromia color blindness, color vision deficiency, colour blindness, colour vision deficiency - genetic inability to distinguish differences in hue red-green color blindness, red-green colour blindness, red-green dichromacy - confusion of red and green yellow-blue color blindness, yellow-blue dichromacy - confusion of yellow and blue