dichromic, a.
(daɪˈkrəʊmɪk)
[f. Gr. δίχρωµ-ος two-coloured (see dichromatic) + -ic.]
1. Relating to or including (only) two colours; applied, in connexion with the theory of three primary colour-sensations, to the vision of colour-blind persons including only two of these.
| 1854 Fraser's Mag. L. 559 Such Dichromic visionaries must lose a great deal. The harmonies of colour cannot touch them. 1881 Le Conte Monoc. Vision 63 Herschel regarded normal vision as trichromic, but the vision of Dalton as dichromic, the red being wanting. |
2. Exhibiting in different positions or circumstances two different colours; dichroic.
| 1877 Miller & M{supc}Leod Elem. Chem. i. (ed. 6) 179 In dichromic media, or solutions which, under certain circumstances, appear to the unaided eye to transmit light of one tint, and, under certain other circumstances, to transmit light of a different tint. |