The Collaborative International Dictionary of English v.0.48:

Monochromic \Mon`o*chro"mic\, a.
   Made, or done, with a single color; as, a monochromic
   picture. Called also, monochromatic and monochrome.
   [1913 Webster +PJC]

The Collaborative International Dictionary of English v.0.48:

Monochrome \Mon"o*chrome\, n. [Gr. ? of one color; mo`nos single
   + ? color: cf. F. monochrome.]
   A painting or drawing in a single color; a picture made with
   a single color.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

black-and-white \black-and-white\, black and white \black and
white\adj. (Photography, Imaging; Printing)
   depicted only in black and white colors, or in shades of
   gray; also called monochromatic and monochrome; -- of
   images. Opposite of color or in color, and contrasting
   with polychrome technicolor three-color; as, a
   black-and-white TV; black-and-white film; the movie
   "Schindler's List" was shot in black and white.

   Syn: black and white, monochromatic, monochrome.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

monochrome
    adj 1: having or appearing to have only one color [syn:
           monochromatic, monochrome, monochromic,
           monochromous]
    n 1: painting done in a range of tones of a single color
    2: a black-and-white photograph or slide [syn: black and
       white, monochrome]

Moby Thesaurus II by Grady Ward, 1.0:

90 Moby Thesaurus words for "monochrome":
   Maxwell triangle, Munsell scale, acrylic painting, chromatic,
   chromatic circle, chromatic spectrum, chromaticity diagram, cold,
   color circle, color cycle, color index, color mixture curve,
   color solid, color spectrum, color system, color triangle,
   colorific, coloring, complementary color, cool, demitint,
   dichromatic, encaustic cerography, encaustic painting,
   finger painting, flower painting, freehand, fresco painting,
   full color, fundamental colors, genre painting, glowing, gouache,
   graphic, grisaille, half tint, halftone, harmonious, hue cycle,
   illumination, illustration, impasto, many-colored, matching,
   medley, metamer, monochromatic, monochromic, motley,
   mural painting, oil painting, painting, painty, parti-colored,
   pastose, photographic, pictorial, picturable, pictural,
   picturesque, picturization, pigmentary, polychromatic, polychrome,
   portraiture, poster painting, primary, primary color, prismatic,
   pure color, rainbow, scenographic, scumbled, secondary,
   secondary color, solar spectrum, spectral, spectral color,
   spectrum, spectrum color, tertiary, tertiary color, the brush,
   tinctorial, tingent, toning, variegated, warm, wash,
   wash drawing



The Free On-line Dictionary of Computing (30 December 2018):

monochrome

    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)