A black and white image, especially such a photograph. / (dated) A painting executed in shades of a single colour. / A ceramic glaze of a single colour; an object so glazed.

Having only one colour. / (photography) Representing colours with shades of gray.

plural of monochrome

(physics) An optical device, consisting of one or more slits, that selects a narrow band of wavelengths from a broader spectrum.

Fitted with a monochromator.

plural of monochromator

Of a single colour; monochromatic.

Third-person singular simple present indicative form of monochromate

(physics) That acts as a monochromator

to monochromatize