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 Organic farmers had to regularly and preemptively spray with copper sulfate, though biodynamic Château Fonplégade reports good results with an oak bark solution. Elin McCoy, Fortune Europe, 11 May 2024 Silverwood Lake was treated with copper sulfate on Tuesday in an effort to control the algal bloom, agency officials said. Hayley Smith, Los Angeles Times, 9 May 2024 Fungicides for bacterial leaf spot must be copper-based, or have copper in them (mancozeb, copper octanoate, copper sulfate, copper hydroxide). Tim Johnson, Chicago Tribune, 19 Aug. 2023 Spray with copper sulfate during early spring each year to help prevent the problem before the buds begin to break. oregonlive, 19 Aug. 2023 But the microbes don’t just clean the copper sulfate up. Joshua Learn, Discover Magazine, 5 May 2021 In their recommendations to Parliament in 1999, the Committee on European Communities noted that copper sulfate, in particular, was far more dangerous than the synthetic alternative. Christie Wilcox, Discover Magazine, 24 Sep. 2012 The Division of Forestry, Fire and State Lands, which manages the contracts to mitigate algal blooms in the state’s public lands, primarily uses copper sulfate as an algaecide, the division’s interim director, Jamie Barnes, said. The Salt Lake Tribune, 2 Aug. 2021 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, 4 Nov. 2020

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'copper sulfate.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1869, in the meaning defined above

Time Traveler
The first known use of copper sulfate was in 1869

Dictionary Entries Near copper sulfate

Cite this Entry

“Copper sulfate.” Dictionary, Merriam-Webster, Accessed 19 Jun. 2024.

Kids Definition

copper sulfate

: a usually blue crystalline compound that is used to destroy algae and fungi

Medical Definition

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

Last Updated: - Updated example sentences
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