the action or process of etching something:semiconductor production processes such as plasma etch [count noun]:acetic acid gives a more selective etch
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Universal
1engrave (metal, glass, or stone) by coating it with a protective layer, drawing on it with a needle, and then covering it with acid to attack the parts the needle has exposed, especially in order to produce prints from it: (as adjective etched)etched glass windows
use the etching process to produce (a print or design):the gallery has 12,000 prints engraved and etched by celebrated mastersthe image is etched into the metal plate
2(of an acid or other solvent) corrode or eat away the surface of (something):caustic soda etches glasstiny droplets in the glaze emulsion were etched away by acid
selectively dissolve the surface of (a semiconductor or printed circuit) with a solvent, laser, or stream of electrons:ballistic electron emission microscopy is used to etch templates for even smaller circuits
3cut or carve (a text or design) on a surface:her initials were etched on the table flap
mark (a surface) with a carved text or design:a Pictish stone etched with mysterious designs figurativeher face was etched with tiredness
cause to stand out or be clearly defined or visible:the outline of the town was etched against the sky
(be etched) (of an experience, image, etc.) be permanently fixed in someone’s memory:the events remain etched in the minds of all who witnessed them
