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primary color

Art. a color, as red, yellow, or blue, that in mixture yields other colors.
Optics. any of a set of monochromatic colors, as red, green, and blue, that are added to match or specify the chromaticity of a stimulus or sample.
Origin of primary color
1605-15 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for primary-color
Historical Examples
  • His mind filed it away together with a primary-color picture of Jiggs and Maggie.

    Citadel Algirdas Jonas Budrys
primary-color in Science
primary color  
Any of a group of colors from which all other colors can be made by mixing. See more at additive, subtractive. See Note at color.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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