What do a.m. and p.m. stand for?

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
  • Gang members have learned that wearing one primary color, such as red or blue, makes them too identifiable.
  • Rather than the primary color being a shade of brown, the shingles reflected an overall blue hue.
  • Each canvas chair comes in the team's primary color and the headrest is in the teams secondary color.
  • Such claims are often accompanied by a pretty silhouette of a skull, highlighted with splotches of primary color.
  • They have two primary color morphs which are either mostly white with pale gray on the back and wings, or uniformly dark gray.
  • The first color code suffix represents the primary color.
  • Describe the primary color, and restrict description to one color.
  • Both collapsed color and primary color differ significantly according to time period.
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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