\Graph"o*type\, n. [Gr. gra`fein to write + -type.]
(Engraving)
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.