The Collaborative International Dictionary
Verdigris \Ver"di*gris\, n. [F. vert-de-gris, apparently from verd, vert, green + de of + gris gray, but really a corruption of LL. viride aeris (equivalent to L. aerugo), from L. viridis green + aes, aeris, brass. See Verdant, and 2d Ore.]
(Chem.) A green poisonous substance used as a pigment and drug, obtained by the action of acetic acid on copper, and consisting essentially of a complex mixture of several basic copper acetates.
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The green rust formed on copper. [Colloq.]
Note: This rust is a carbonate of copper, and should not be confounded with true verdigris.
--U. S. Disp.Blue verdigris (Chem.), a verdigris having a blue color, used a pigment, etc.
Distilled verdigris (Old Chem.), an acid copper acetate; -- so called because the acetic acid used in making it was obtained from distilled vinegar.
Verdigris green, clear bluish green, the color of verdigris.
Usage examples of "verdigris green".
The buildings, vermilion, turquoise, orange and verdigris green, rose up from the still blue waters across which white herons and egrets swooped in long, arcing dives.