Primary colors Meaning, Definition & Usage

  1. noun any of three colors from which all others can be obtained by mixing
    primary color; primary colour.

WordNet


Definitions
  1. those developed from the solar beam by the prism, viz., red, orange, yellow, green, blue, indigo, and violet, which are reduced by some authors to three, red, green, and violet-blue. These three are sometimes called fundamental colors.
Definitions
  1. . See under Color.

Webster 1913