From The Collaborative International Dictionary of English v.0.48:

Graphotype \Graph"o*type\, n. [Gr. gra`fein to write + -type.]
   A process for producing a design upon a surface in relief so
   that it can be printed from. Prepared chalk or oxide of zinc
   is pressed upon a smooth plate by a hydraulic press, and the
   design is drawn upon this in a peculiar ink which hardens the
   surface wherever it is applied. The surface is then carefully
   rubbed or brushed, leaving the lines in relief.
   [1913 Webster]
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