noun
verdigris
VUR-dih-grees/ˈvɜːrdɪɡriː/
A green-blue substance that forms on copper as it corrodes.
Green-blue verdigris covers much of the old copper watering can.
Etymology
The name means “green of Greece,” with green describing the coating on weathered copper or brass. Why this substance was associated with Greece is not known.
In context
today i thought we could take some verdigris off of an old brooch i have
More examples
- Green-blue verdigris forms on the copper statue over time.
- She carefully removes the verdigris from the copper handle.
- The conservator leaves the verdigris intact on the antique copper vase.