trichromatism

noun

tri·​chro·​ma·​tism (ˌ)trī-ˈkrō-mə-ˌti-zəm 

: color vision based on the perception of three primary colors and especially red, green, and blue

Word History

First Known Use

circa 1895, in the meaning defined above

Medical Definition

trichromatism

noun

tri·​chro·​ma·​tism (ˈ)trī-ˈkrō-mə-ˌtiz-əm 

1

: the quality or state of being trichromatic

2

: color vision based on the perception of three primary colors and especially red, green and blue compare deuteranomaly, protanomaly