bichromated

/baɪˈkroʊmeɪtɪd/
adjective
  1. Treated or combined with a bichromate, especially for use in photography or printing.
    • The bichromated gelatin was exposed to light to create a relief image.
    • The bichromated solution turned dark when exposed to sunlight.
    • Early photographers used bichromated colloids to make prints.
Synonyms
What does "bichromated" mean? | whatsthatwordmean | whatsthatwordmean