verdigris

[ vur-di-grees, -gris ]
/ ˈvɜr dɪˌgris, -grɪs /

noun

a green or bluish patina formed on copper, brass, or bronze surfaces exposed to the atmosphere for long periods of time, consisting principally of basic copper sulfate.

Origin of verdigris

1250–1300; < Middle French vert de gris; replacing Middle English vertegrez < Anglo-French vert de Grece, Old French vere grez green of Greece
Also called aerugo.

OTHER WORDS FROM verdigris

ver·di·gris·y, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for verdigris

British Dictionary definitions for verdigris

verdigris
/ (ˈvɜːdɪɡrɪs) /

noun

a green or bluish patina formed on copper, brass, or bronze and consisting of a basic salt of copper containing both copper oxide and a copper salt
a green or blue crystalline substance obtained by the action of acetic acid on copper and used as a fungicide and pigment; basic copper acetate

Word Origin for verdigris

C14: from Old French vert de Grice green of Greece
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012