glyphography

Century Dictionary and Cyclopedia

1. n. A kind of electrotypy by means of which plates engraved in relief are made, from which impressions can be taken. A copper plate is covered with a ground such as is employed in ordinary etching, but of considerable thickness, and this ground is cut away by etching- or engraving-tools so as to expose the metal plate. From this the electro cast is made, the recesses or incisions in the ground constituting the raised ridges which form the design of the glyphograph.

GNU Webster's 1913

1. n. A process similar to etching, in which, by means of voltaic electricity, a raised copy of a drawing is made, so that it can be used to print from.