Definition of platinotype in English:

platinotype

noun

Photography
historical
  • 1A print produced by the platinotype process.

  • 2An early photographic process producing prints in platinum black, using paper coated with a solution of potassium chloroplatinite, K₂PtCl₄, and ferric oxalate, and developed in hot potassium oxalate solution. Usually attributive.

Origin

Mid 19th century; earliest use found in Robert Hunt (1807–1887), chemist and photographer. From platinum + -o- + -type.

Pronunciation

platinotype

/ˈplat(ə)nəʊtʌɪp//ˈplatɪnəʊtʌɪp/