verdigris

Part of speech: noun

The green rust of copper.

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Usage examples "verdigris":

  1. Then came a black morass, at the edge of which stood white- haired cotton- grass, and on which swam a layer of dissolved iron, shining like verdigris. - "Dame Care", Hermann Sudermann.
  2. It will be recollected, too, that the water was salt, which caused the inside of the copper to be corroded to such a degree that it was lined with a coat of verdigris. - "American Prisoners of the Revolution", Danske Dandridge.