| slovo | definícia |
Verdigris green
(gcide) | 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.
[1913 Webster]
2. The green rust formed on copper. [Colloq.]
[1913 Webster]
Note: This rust is a carbonate of copper, and should not be
confounded with true verdigris. --U. S. Disp.
[1913 Webster]
Blue verdigris (Chem.), a verdigris having a blue color,
used as 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.
[1913 Webster] |
| |