photo-galvanography
/ˌfəʊtə(ʊ)ɡalvəˈnɒɡrəfi/Now historical
noun
A process for obtaining a relief printing plate from a photograph, in which a relief negative of the photograph is made in sensitized gelatin and a gutta-percha positive taken from this, which is then electroplated.
Origin
Mid 19th century. From photo- + galvanography. Compare slightly earlier photo-galvanographic, and slightly later photogalvanic.
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