Having or displaying two colors; relating to systems or processes that work with or use two colors.
From 'bi-' meaning two, combined with 'chromatic' (from Greek 'chroma' meaning color). This term became common in the 19th and 20th centuries as color printing and display technologies developed.
Early printing presses could only handle bichromatic printing efficiently—meaning most colorful books and posters before modern color printing used just two strategic colors to create visual impact, which is why old designs often look so striking!
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