Hypertext Webster Gateway: "Verdigris"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Verdigris \Ver"di*gris\, v. t.
To cover, or coat, with verdigris. [R.] ``An old verdigrised
brass bugle.'' --Hawthorne.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
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}.]
1. (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.
2. 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.
From WordNet (r) 1.7 (wn)
verdigris
n 1: a blue or green powder used as a paint pigment [syn: {cupric
acetate}]
2: a green patina that forms on copper or brass or bronze that
has been exposed to the air or water for long periods of
time
v : color verdigris
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