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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.
1605-15 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for primary colors
  • Bright primary colors are splashed across walls, and the furnishings tend toward minimalist and modern.
  • The fireflies all start as primary colors, and the frogs are all secondary and tertiary colors.
  • These low riding flips and sandals come in a bright array of primary colors as well as natural hues.
  • There are thousands of fundamental odors, far more than the handful of primary colors.
  • All the pieces are color-coded in bright primary colors with the standard circuit notation imprinted on top.
  • At first sight, with its different zones colored different primary colors, it resembles the subway maps of many major capitals.
  • The panels are dyed to match your favorite teams primary colors with the logo featured prominently in the center.
  • The floor-to-ceiling coils of plastic pipes painted in primary colors demonstrate how sound travels.
  • However, every now and then isolated objects will register in bold primary colors against the monochromatic backgrounds.
  • It is a surface based on combinations of three primary colors.
primary colors 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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