Blue verdigris
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 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]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • blue verdigris — noun see verdigris I …   Useful english 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}.] 1. (Chem.) A… …   The Collaborative International Dictionary of English

  • Verdigris green — 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.… …   The Collaborative International Dictionary of English

  • verdigris — [vʉr′di grēs΄, vʉr′digris] n. [ME vertegrez < MFr verdegris < OFr vert de Grece, lit., green of Greece < verd, green (see VERT1) + de, of + Grece, Greece] 1. a green or greenish blue poisonous compound, a basic acetate of copper,… …   English World dictionary

  • verdigris — noun a) A blue green patina that forms on copper containing metals. Lets to the museum. Cannon balls, arrow heads; Roman glass and a forceps green with verdigris. b) Copper acetate …   Wiktionary

  • verdigris — [[t]vɜ͟ː(r)dɪgrɪs, griːs[/t]] N UNCOUNT Verdigris is a greenish blue substance that forms on the metals copper, brass, and bronze after they have been left in wet or damp conditions …   English dictionary

  • blue verditer — Verditer Ver di*ter, n. [F. vert de terre, literally, green of earth.] (Chem.) (a) Verdigris. [Obs.] (b) Either one of two pigments (called {blue verditer}, and {green verditer}) which are made by treating copper nitrate with calcium carbonate… …   The Collaborative International Dictionary of English

  • verdigris — noun Etymology: Middle English vertegrese, from Anglo French verdegrece, vert de Grece, literally, green of Greece Date: 14th century 1. a. a green or greenish blue poisonous pigment resulting from the action of acetic acid on copper and… …   New Collegiate Dictionary

  • verdigris — Cupric acetate (normal). [O. Fr. verd, green, de, of, Gris, Greeks] * * * ver·di·gris vərd ə .grēs, .gris, grəsalso .grē n a green or greenish blue poisonous pigment resulting from the action of acetic acid on copper, consisting of one or more… …   Medical dictionary

  • verdigris — ver|di|gris [ˈvə:dıgri:, gri:s US ˈvə:r ] n [U] [Date: 1300 1400; : Old French; Origin: vert de Grice green of Greece ] a greenish blue substance that sometimes appears on ↑copper or ↑brass …   Dictionary of contemporary English

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