tri·chro·mat·ic (trī′krō-mătĭk) also tri·chrome (trīkrōm′) or tri·chro·mic (trī-krōmĭk)
1. Of, relating to, or having three colors, as in photography or printing.
2. Having perception of the three primary colors, as in normal human vision: trichromatic vision; a trichromatic individual.
tri·chroma·cy (trī-krōmə-sē), tri·chroma·tism (-tĭz′əm) n.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.