Webster’s Revised Unabridged Dictionary · 1913
Dichromatic
Di′chro·mat′ic (dī′krō·măt′ĭk), a. [Pref. di- + chromatic: cf. Gr. δίχρωμος.] 1. Having or exhibiting two colors.
2. (Zoöl.) Having two color varieties, or two phases differing in color, independently of age or sex, as in certain birds and insects.