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calcium oxide






calcium oxide   
noun

Definition of calcium oxide

: a caustic solid CaO that is white when pure and that is the chief constituent of lime



Recent Examples on the Web


//The gates, entrances and grounds of many farms were covered in snowy layers of calcium oxide, a disinfectant.
— Washington Post, "Fears grow in South Korea as tests confirm more swine fever," 25 Sep. 2019
//The primary ingredient in concrete is calcium oxide, which is taken from limestone (CaCO3)—and that leaves CO2 as a byproduct.
— Scott K. Johnson, Ars Technica, "Splitting water to make cement could clean up a dirty industry," 17 Sep. 2019
//There the calcium carbonate is heated to 900°C to release pure carbon-dioxide gas ready for capture, and calcium oxide.
— The Economist, "Extracting carbon dioxide from the air is possible. But at what cost?," 7 June 2018
//On top of the harling went several coats of limewash, a mixture of water and calcium oxide.
— David Kamp, Vanities, "How Jeremy Irons Rescued and Restored a 15th-Century Irish Castle," 22 Sep. 2017
//The concrete is made of quicklime, or calcium oxide, and volcanic ash.
— Erin Blakemore, Smithsonian, "Why Ancient Roman Concrete Is So Strong," 5 July 2017


First Known Use of calcium oxide

1859, in the meaning defined above



Dictionary Entries near calcium oxide

calcium light

calcium nitrate

calcium oxalate

calcium oxide

calcium phosphate

calcium resinate

calcium silicate