Definition of photo-galvanography in US English:

photo-galvanography

noun

historical
  • 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.

Pronunciation

photo-galvanography

/ˌfəʊtə(ʊ)ɡalvəˈnɒɡrəfi/