Dictionary.com
Thesaurus.com

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.

trichromatism British  
/ traɪˈkrəʊməˌtɪzəm /

noun

  1. the use or combination of three primary colours for colour reproduction in photography, printing, television, etc

  2. 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

Etymology

Origin of trichromatism

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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.