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trichromatism

[trahy-kroh-muh-tiz-uh m] /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.
Compare monochromatism (def 2), dichromatism (def 2).
Origin
1885-1890
1885-90; trichromat(ic) + -ism
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for trichromatism

trichromatism

/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
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