Verdigris

Pronunciation: /ˈvɝˈdɪɡˈɑɹˈɪz/

Verdigris (noun)

  1. A bluish-green powder or coating that forms on copper or bronze when they are exposed to air and moisture.
  2. A green colour used in painting, made from compounds related to copper corrosion.

Examples

  • The old statue has a green copper stain on its surface.
  • Rain left a green copper stain where the metal was exposed.