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electro-engraving
electro-engraving n. 
/ᵻˌlɛktrəʊɛnˈɡreɪvɪŋ/, /ᵻˌlɛktrəʊᵻŋˈɡreɪvɪŋ/, /ᵻˌlɛktrəʊɛŋˈɡreɪvɪŋ/, /iˌlɛktroʊɛnˈɡreɪvɪŋ/ now rare engraving in which metal is etched by electrolysis or (in early use) by a tool conveying an electric current; cf. electro-etching n.
Brit. /ᵻˌlɛktrəʊᵻnˈɡreɪvɪŋ/
, /ᵻˌlɛktrəʊᵻnˈɡreɪvɪŋ//ᵻˌlɛktrəʊɛnˈɡreɪvɪŋ//ᵻˌlɛktrəʊᵻŋˈɡreɪvɪŋ//ᵻˌlɛktrəʊɛŋˈɡreɪvɪŋ/U.S. /əˌlɛktroʊᵻnˈɡreɪvɪŋ/
, /əˌlɛktroʊᵻnˈɡreɪvɪŋ//iˌlɛktroʊɛnˈɡreɪvɪŋ/ΚΠ
1848 J. H. Pring Acct. Method Etching or Engraving 4 The one process may be designated as electro-engraving, viâ humidâ, whilst the other..may with propriety be styled electro-engraving or etching, viâ siccâ.
1879 Scribner's Monthly Sept. 796/1 (heading) Electro-engraving machine.
1993 E. Holder tr. Wks. Daniel Lagache 338 After the recording, the father and mother are presented in the form of two linked discs that have been subjected to electro-engraving.
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