aquatint

aquatint
/ˈækwətɪnt; `ækwəˌtɪnt/ n
1 [U] process of etching on copper using nitric acid 铜版画飞尘腐蚀法; 凹版腐蚀制版法.
2 [C] picture made in this way 用飞尘腐蚀法印制的图画.

牛津英汉双解词典