- noun a green or greenish-blue poisonous powder formed by the reaction of acetic acid with a copper surface, used as a paint pigment and fungicide
- A bluish green patina that naturally forms on copper, bronze or brass over time as it is exposed to atmospheric conditions.
- noun a green discoloration on things made of copper caused by contact with damp
Origin & History of “verdigris”
Etymologically, verdigris means ‘green of Greece’. It comes from Old French vertegrez, a conflation of vert de Grece ‘green of Greece’ (vert came from Latin viridis ‘green’, which also gave English verdant (16th c.) and verdure (14th c.) and may be related to Old English wīse ‘sprout, stalk’, Old Norse vísir ‘bud, sprout’, and Lithuanian veisti ‘propagate’). The reason for the application of the term to the patina on copper is not known.