Related to verditer: Verditer blue
Either of two basic carbonates of copper, used as a blue or green pigment.
[Middle English, alteration of Old French verd de terre, green of earth : verd, green; see verdant + de, of; see verdigris + terre, earth (from Latin terra; see ters- in Indo-European roots).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Colours) a blue-green pigment made from copper and used by painters, etc
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014