Pronunciation: (trī-krō'mu-tiz"um), [key]
1. the quality or condition of being trichromatic.
2. the use or combination of three colors, as in printing or photography.
3. Ophthalm.normal color vision. Cf. monochromatism (def. 2), dichromatism (def. 2).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.