Answer: mezzotint

AnswerCrossword Clue
MEZZOTINTCopper engraving.
MEZZOTINTEngraving
mezzotintA print made from an engraved copper or steel plate on which the surface has been partially roughened, for shading, and partially scraped smooth, giving light areas. The technique was much used in the 17th, 18th, and early 19th centuries for the reproduction of paintings
mezzotintto engrave using a method of copper engraving with even gradation of tones
mezzotintThe technique or process of making pictures in this way