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Meaning of Paris green

Par'is green'

Pronunciation: [key]
  1. 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 l.c.) a variable hue ranging from light to vivid yellow green in color.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.