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trichromatism

American  
[trahy-kroh-muh-tiz-uhm] / traɪˈkroʊ məˌtɪz əm /

noun

  1. the quality or condition of being trichromatic.

  2. the use or combination of three colors, as in printing or photography.

  3. Ophthalmology.  normal color vision.


Etymology

Origin of trichromatism

First recorded in 1885–90; trichromat(ic) + -ism