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Bordeaux mixture

Today it means: A mixture of copper sulfate and lime that is sprayed on plants as a fungicide. Full definition →

French bouillie bordelaise

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French · calque ofbouillie bordelaise
English todayBordeaux mixture

Calque of French bouillie bordelaise, after Bordeaux in France, where it is used on vines.

Etymology from Wiktionary, CC BY-SA 4.0.