Hypertext Webster Gateway: "dichromatic"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Dichromatic \Di`chro*mat"ic\, a. [Pref. di- + chromatic: cf. Gr.
?.]
1. Having or exhibiting two colors.
2. (Zo["o]l.) Having two color varieties, or two phases
differing in color, independently of age or sex, as in
certain birds and insects.
From WordNet (r) 1.7 (wn)
dichromatic
adj : having or involving two colors
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