Answer: aquatint

AnswerCrossword Clue
AQUATINTType of engraving.
AQUATINTEtching process
AQUATINTEtching on copperplate
AQUATINTEtching of a sort
aquatintto etch in aquatint
aquatintto etch using a certain process
aquatintetching made by this process
aquatintprocess imitating the broad flat tints of ink or wash drawings by etching a microscopic crackle on the copperplate intended for printing