1662, "painting or drawing done in different tints of a single color," from Gk. monochromos "of a single color," from monos "single, alone" + khroma (gen. khromatos) "color, complexion, skin." Photographic sense is recorded from 1940.
monochromegraphics Literally "one colour". Usually used for a black and white (or sometimes green or orange) monitor as distinct from a color monitor. Normally, each pixel on the display will correspond to a single bit of display memory and will therefore be one of two intensities. A grey-scale display requires several bits per pixel but might still be called monochrome. Compare: bitonal. (1994-11-24)
Mon`o*chro*mat"ic\, a. [Cf. F. monochromatique. See Monochrome.] Consisting of one color, or presenting rays of light of one color only. Monochromatic lamp (Opt.),a lamp whose flame yields rays of some one homogenous light. It is of great importance in optical experiments.