verdigris
noun
- a green or greenish-blue poisonous compound, a basic acetate of copper, prepared by treating copper with acetic acid and used as a pigment, dye, etc.
- a green or greenish-blue coating () that forms like rust on brass, bronze, or copper
See verdigris in American Heritage Dictionary 4
(vûrˈdĭ-grēsˌ, -grĭsˌ, -grēˌ)
noun- A blue or green powder consisting of basic cupric acetate used as a paint pigment and fungicide.
- A green patina or crust of copper sulfate or copper chloride formed on copper, brass, and bronze exposed to air or seawater for long periods of time.
(vûrˈdĭ-grĭs)
A river, about 451 km (280 mi) long, of southeast Kansas and northeast Oklahoma flowing generally southward to the Arkansas River.
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