Wiktionary
bichromatic
a. 1 (context mathematics English) Describing a graph with edges of two possible (term: colours) 2 (context physics English) Describing a spectrometer (or similar instrument or system) capable of analysing two wavelengths at the same time
Usage examples of "bichromatic".
Only the color of his robe and the surprisingly dim lights of his own body provided any touch of color to relieve the bichromatic vista.
Crawford chose bichromatic so he could use a single powder on all the surfaces he had to dust.
She approached me, a broad smile spreading across her beautiful, bichromatic features.