verdigris

Meanings

1. A blue-green patina or rust that forms on copper-containing metals.
2. Copper acetate.
3. The color of this patina or material.

1. To cover, or coat, with verdigris.

Etymology

From Middle English vertegrece, verdegres, from Old French verte grez (literally “acidic green”), an alteration of older verte de Grece (literally “green of Greece”). The modern French writing of this word is vert-de-gris (literally “green of gray”).