copper sulfate


Definition of copper sulfate

: a sulfate of copper especially : the normal sulfate that is white in the anhydrous form but blue in the crystalline hydrous form CuSO4·5H2O and that is often used as an algicide and fungicide

Examples of copper sulfate in a Sentence

Recent Examples on the Web In the study, researchers from the U and the U.S. Geological Survey applied a copper sulfate solution to the water in St. Alban's Bay near Excelsior. Katy Read, Star Tribune, "Research using copper in Lake Minnetonka to eradicate zebra mussels shows promise," 4 Nov. 2020 In the 1950s, scientists tried using copper sulfate. Jenny Howard, National Geographic, "Red tides, explained," 5 July 2019 The European Union determined that copper sulfate may cause cancer and intended to ban it, but backed off because organic farmers don’t have any viable alternative. Henry I. Miller, WSJ, "The Organic Industry Is Lying to You," 5 Aug. 2018 One that organic gardeners all over the world know is the fungicide Bordeaux mix, with copper sulfate as the main ingredient. Jo Ellen Meyers Sharp, Indianapolis Star, "The Hoosier Gardener: Trip to Bordeaux wine country is an educational experience," 13 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'copper sulfate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of copper sulfate

1869, in the meaning defined above

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Time Traveler for copper sulfate

Time Traveler

The first known use of copper sulfate was in 1869

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Statistics for copper sulfate

Last Updated

7 Nov 2020

Cite this Entry

“Copper sulfate.” Dictionary, Merriam-Webster, Accessed 25 Nov. 2020.

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More Definitions for copper sulfate

copper sulfate


Medical Definition of copper sulfate

: a sulfate of bivalent copper that is best known as the blue crystalline hydrate CuSO4·5H2O, is used as an algicide and fungicide, and has been used medicinally in solution as an emetic but is not now recommended for such use because of its potential toxicity

called also cupric sulfate

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