Medical Dictionary

verdigris

noun ver·di·gris
\ˈvərd-ə-ˌgrēs, -ˌgris, -grəs also -ˌgrē\

Medical Definition of VERDIGRIS

:  a green or greenish blue poisonous pigment resulting from the action of acetic acid on copper, consisting of one or more basic copper acetates, and formerly used in medicine

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