dichromatism

[ dahy-kroh-muh-tiz-uhm ]

noun

1. the quality or state of being dichromatic.
2. Also called di·chro·ma·top·si·a [dahy-kroh-m, uh, -, top, -see-, uh]. Ophthalmology. a defect of vision in which the retina responds to only two of the three primary colors. Compare monochromatism ( def 2 ), trichromatism ( def 3 ).

Word History and Origins

Origin of dichromatism¹

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

Example Sentences

The two sexes are alike, the two color phases being individual and representing dichromatism.

From Project Gutenberg