1. 
   Electro-engraving
   E·lec`tro-en·grav'ing noun The art or process of engraving by means of electricity.
   Found op http://www.encyclo.co.uk/webster/E/18
   
   
2. 
   electro-engraving
   The art or process of engraving by means of electricity. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?electro-engraving
   
   
3. 
   Electro-engraving
   • (n.) The art or process of engraving by means of electricity.
   Found op http://thinkexist.com/dictionary/meaning/electro-engraving/
   
   

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