Portland cement

Port·​land cement | \ ˈpȯrt-lən(d)- How to pronounce Portland cement (audio) \
variants: or less commonly portland cement

Definition of Portland cement

: a cement (see cement entry 1 sense 1b) that sets under water and that is made by finely pulverizing the clinker produced by heating a mixture of clay and limestone or similar materials to a high temperature just short of fusing Drexel engineers have found a way to improve upon ordinary Portland cement …, the glue that's bonded much of the world's construction since the late 1800s.Swiss National Science Foundation Once the joints are open, refill them with a dry mix of stone dust and portland cement, mixed at a ratio of 1 part cement to 6 parts dust.This Old House

Examples of Portland cement in a Sentence

Recent Examples on the Web Mix a batch of mortar in a wheelbarrow [7] by combining portland cement, sand, and water, following the instructions on the cement bag. Joseph Truini, Popular Mechanics, 24 July 2021 The plant's primary product is portland cement, a product widely used by the construction industry to produce concrete across the country. Sarah Bowman, The Indianapolis Star, 5 June 2021 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, 9 Oct. 2018 Modern concrete swaps out the volcanic ash for portland cement. Amy Gamerman, WSJ, 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, 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, 15 Mar. 2018 See More

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.

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

Learn More About Portland cement

Time Traveler for Portland cement

Time Traveler

The first known use of Portland cement was in 1824

See more words from the same year

Dictionary Entries Near Portland cement

Portland Canal

Portland cement


See More Nearby Entries 

Statistics for Portland cement

Cite this Entry

“Portland cement.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Portland%20cement. Accessed 25 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More from Merriam-Webster on Portland cement

Britannica.com: Encyclopedia article about Portland cement


Test Your Vocabulary

Eponyms: Words Named After People

Name That Thing

Test your visual vocabulary with our 10-question challenge!

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!