Definitionn. a deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light
Last update: October 7, 2015
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This curious phenomenon is known as dichromatism (from 8e-, two, and Xpc?�a, colour). [Please select]
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Hybridism and dichromatism are believed to account for these birds of which somewhat over a hundred specimens are known, chiefly from the lower Hudson and Connecticut Valleys. [Please select]
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