Definition of chemigraphy in US English:

chemigraphy

noun

Printing
historical
  • A method of relief printing in which chemicals are used to etch a metal plate on which a drawing has been made, or (in later use) on to which a photograph has been transferred.

Origin

Mid 19th century; earliest use found in The Times. From chemi- + -graphy, probably after German Chemigraphie.

Pronunciation

chemigraphy

/ˌkɛˈmɪɡrəfi/