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Definition of "etching" |
The act or process of making designs or pictures on a metal plate, glass, etc., by the corrosive action of an acid instead of by a burin. / a reactive process where material is removed from a semiconductor device or printed circuit board. Usually a photosensitive material is exposed through a photomask, and either a wet chemical process or a dry plasma process is used to selectively remove material to leave a particular pattern behind after the etch process is completed. |
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