trichromatism

[ trahy-kroh-muh-tiz-uh m ]
/ traɪˈkroʊ məˌtɪz əm /

noun

the quality or condition of being trichromatic.
the use or combination of three colors, as in printing or photography.
Ophthalmology. normal color vision.Compare monochromatism(def 2), dichromatism(def 2).

Origin of trichromatism

First recorded in 1885–90; trichromat(ic) + -ism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for trichromatism

trichromatism

/ (traɪˈkrəʊməˌtɪzəm) /

noun

the use or combination of three primary colours for colour reproduction in photography, printing, television, etc
rare the state of being trichromatic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012