aquatint

aquatint
noun
  1. a print resembling a watercolour, made by etching a copper plate with nitric acid, using resin and varnish to produce areas of tonal shading
    用凹版腐蚀制版法制成的印版
    ■[mass noun]the technique or process of producing such prints
    凹版腐蚀制版法
verb
  1. [with obj.]produce (a print) in this way
    用凹版腐蚀制版法制版
语源
  1. late 18th cent.: from French aquatinte, from Italian acqua tinta 'coloured water'
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