pozzolana

American  

[pot-suh-lah-nuh, pawt-tsaw-lah-nah] / ˌpɒt səˈlɑ nə, ˌpɔt tsɔˈlɑ nɑ /

Italian pozzolan

noun

1. a porous variety of volcanic tuff or ash used in making hydraulic cement.

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Etymology

Origin of pozzolana

1905–10; < Italian < Latin puteolāna, feminine of puteolānus of Pozzuoli (< Latin Puteolī literally, little springs); see -an

Example Sentences

The quarries contain building materials, such as marble and pozzolana, which is Roman cement almost ready-made.

From The Roman Question by About, Edmond

The cement was composed of pozzolana and lime.

From Seeing Europe with Famous Authors, Volume 7 Italy, Sicily, and Greece (Part One) by Halsey, Francis W. (Francis Whiting)

Not only the walls but the vaults were built in this pozzolana concrete, and formed one solid mass.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 4 "Aram, Eugene" to "Arcueil" by Various

A cement which hardens under water; used for piers, docks, &c., as pozzolana, Aberthaw limestone, &c.

From The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. by Belcher, Edward, Sir

The tufa lithoide and the pozzolana were thus alone used for building purposes by the Romans, and the catacombs are never found excavated in these.

From Museum of Antiquity A Description of Ancient Life by Haines, T. L. (Thomas Louis)