dichroic, a.
(daɪˈkrəʊɪk)
[ad. Gr. δίχροος, -ως two-coloured (f. δι- two + χρώς colour, complexion) + -ic.]
Having or showing two colours; spec. applied to doubly-refracting crystals that exhibit different colours when viewed in different directions; or to solutions that show essentially different colours in different degrees of concentration.
| a 1864 Dana cited in Webster. 1878 Gurney Crystallogr. 112 Tourmaline is strongly dichroic. 1879 Dana Man. Geol. (ed. 3) 67 This mineral..being dichroic. |