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1. Photog Printing involving the combination of three primary colours in the production of any colour
2. of, relating to, or having normal colour vision
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
trichromaticityThe principle of human color perception. The retina in the human eye contains cone cells with three different kinds of proteins, and each protein absorbs a different color. One is more sensitive to blue, and the other two are more sensitive to yellow. The difference between the two types of yellow cones determines a range of green to red. Hence, red, green and blue (RGB). See tristimulus, RGB and YUV.
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