Definition from Wiktionary, the free dictionary
monochrome (plural monochromes)
- 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.
black and white image
painting executed in shades of a single colour
monochrome (not comparable)
- having only one colour
- (photography) representing colours with shades of gray
having only one colour
of a photograph, representing colours with shades of gray
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Related terms 
monochrome (masculine and feminine, plural monochromes)