sulphate of copper

English

Noun

sulphate of copper (uncountable)

  1. copper sulphate
    • 1889, Rudyard Kipling, “The Hill of Illusion”, in Under the Deodars, Boston: The Greenock Press, published 1899, page 82:
      My poor boy, how the prickly heat has marked your forehead! Have you ever tried sulphate of copper in water?
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