dichromatism

[dahy-kroh-muh-tiz-uhm]

noun

1. the quality or state of being dichromatic.

2. Also called dichromatopsia. Ophthalmology.,  a defect of vision in which the retina responds to only two of the three primary colors.

Word History and Origins

Origin of dichromatism¹

First recorded in 1880–85; dichromat(ic) + -ism

Example Sentences

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.

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The pumas were for the most part bright red, but some were reddish gray, there being much the same dichromatism that I found among their Colorado kinsfolk.

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