deep-etch

deep-etch

[¦dēp ′ech]
(graphic arts)
The etching of an offset printing plate so that the printing area becomes slightly recessed, thereby leading to sharper definition and longer life on press.
(metallurgy)
Severe etching of a metal surface to reveal gross features, such as abnormal grain size, segregation, or cracks, at magnifications of 10 diameters or less. Also known as macroetching.
References in periodicals archive ?
With the aid of a technique called deep-etch electron microscopy, developed by John E.