Definitions for "Process Colors"
Keywords:  magenta, cyan, cmyk, yellow, black
Cyan, magenta, yellow, and black inks (abbreviated as CMYK, with black symbolized as "K") used in the four-color offset printing process.
in printing the subtractive colors - cyan, yellow, magenta, and black - used in the four color process.
The substractive primaries: cyan, magenta, and yellow, plus black that are used in four-color process printing also called primary colors.