portland cement

noun
port·​land cement | \ ˈpȯrt-lən(d)- How to pronounce portland cement (audio) \

Definition of portland cement

: a hydraulic cement made by finely pulverizing the clinker produced by calcining to incipient fusion a mixture of clay and limestone or similar materials

Examples of portland cement in a Sentence

Recent Examples on the Web

The very high temperatures required to drive the water out of limestone and transform it into portland cement also ensure the complete combustion of the rubber and fabric in tires. Mike Allen, Popular Mechanics, "How to Dispose of Hazardous Waste Without Damaging the Environment," 9 Oct. 2018 Modern concrete swaps out the volcanic ash for portland cement. Amy Gamerman, WSJ, "The Rise of the Fashionable Concrete Home," 9 Aug. 2018 Some estimates suggest the practice has the potential to lower emissions by as much as 40 to 80 percent compared with portland cement, White said. Chelsea Harvey, Scientific American, "Cement Producers Are Developing a Plan to Reduce CO2 Emissions," 9 July 2018 The tiles on the front facade are made from portland cement and rendered in a range of hues to give the surface a mottled look. Barbara Eldredge, Curbed, "Rad tiny cabin is covered in 4,500 3D-printed tiles," 15 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'portland cement.' 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 portland cement

1824, in the meaning defined above

History and Etymology for portland cement

Isle of Portland, England; from its resemblance to a limestone found there

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Time Traveler for portland cement

The first known use of portland cement was in 1824

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Rhyming Dictionary: Words that rhyme with portland cement

Britannica.com: Encyclopedia article about portland cement

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