<chemistry> 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. Verditer blue, a pale greenish blue colour, like that of the pigment verditer.
Origin: F. Vert-de-terre, literally, green of earth.
(01 Mar 1998)
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