Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Either of two basic carbonates of copper, used as a blue or green pigment.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. verdigris
  • n. Either of two pigments (blue verditer and green verditer) made by treating copper nitrate with calcium carbonate.

from the GNU version of the Collaborative International Dictionary of English

  • n. Verdigris.
  • n. Either one of two pigments (called blue verditer, and green verditer) which are made by treating copper nitrate with calcium carbonate (in the form of lime, whiting, chalk, etc.) They consist of hydrated copper carbonates analogous to the minerals azurite and malachite.

from The Century Dictionary and Cyclopedia

  • n. A name applied to two pigments, one green, the other blue, prepared by decomposing copper nitrate with chalk or quicklime. See greenand blue.

Etymologies

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, Fourth Edition)
French vert-de-terre, literally "green of earth". (Wiktionary)

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