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Paris green

noun
1.
Chemistry. an emerald-green, poisonous, water-insoluble powder produced from arsenic trioxide and copper acetate: used chiefly as a pigment, insecticide, and wood preservative.
2.
(sometimes lowercase) a variable hue ranging from light to vivid yellow green in color.
Origin
1870-1875
1870-75
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for paris-green

Paris green

noun
1.
an emerald-green poisonous insoluble substance used as a pigment and insecticide. It is a double salt of copper arsenite and copper acetate. Formula: 3Cu(AsO2)2.Cu(C2H3O2)2
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
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