dichromatic adjective & noun. 
[dʌɪkrǝ(ʊ)'matɪk] M19.[from DI-2 + CHROMATIC.]A. adjective.
1.  Having two colours; 
spec. (of an animal etc.) occurring with two different kinds of colouring, independently of age or sex. 
M19.2.  Having or designating a form of colour-blindness in which the range of colours seen is limited to those produced by two primary colours, rather than the usual three. 
L19.b. noun. = 
DICHROMAT noun. 
L19. ■   di'chromatism noun the quality or fact of being dichromatic 
L19.  [TahlilGaran] English Dictionary ▲