Noun
CMY (uncountable)
(printing) Initialism of cyan, magenta, yellow.
Custom colours are obtained by means of subtractive CMY colour mixing, by inserting combinations of cyan, magenta and yellow filters into the optical path of the lighting fixture. Source: Internet
Capable of switching between beam and spot modes quickly and accurately, it offers CMY colour mixing, dichroic colours, and two gobo wheels. Source: Internet
The black channel image is inverted and the inverted image is applied to the media's CMY (or spot) color planes. Source: Internet