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EtymologyEdit

From Bordeaux in France, where it is used on vines.

NounEdit

Bordeaux mixture (uncountable)

  1. A mixture of copper sulphate and lime that is sprayed on plants as a fungicide.
    • 1891, The Times Nov 16, 1891 pg 12 col A
      Reports are coming to hand from a very large number of districts as to the success which has attended the use of the Bordeaux mixture (sulphate of copper and lime) as a preventive of potato disease.

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