Source : Webster's Revised Unabridged Dictionary (1913)

Electro-tint \E*lec"tro-tint`\, n. (Fine Arts)
   A style of engraving in relief by means of voltaic
   electricity. A picture is drawn on a metallic plate with some
   material which resists the fluids of a battery; so that, in
   electro-typing, the parts not covered by the varnish, etc.,
   receive a deposition of metal, and produce the required copy
   in intaglio. A cast of this is then the plate for printing.