Word Study
trichromatic
CIDE DICTIONARY
trichromatic, a. [Pref. tri- + chromatic.].
Having or existing in three different phases of color; having three distinct color varieties; -- said of certain birds and insects. [1913 Webster]
OXFORD DICTIONARY
trichromatic, adj.
1 having or using three colours.
2 (of vision) having the normal three colour-sensations, i.e. red, green, and purple.
1 having or using three colours.
2 (of vision) having the normal three colour-sensations, i.e. red, green, and purple.
Derivative
trichromatism n.
For further exploring for "trichromatic" in Webster Dictionary Online