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

But its peculiar interest is, that it affords at one point a marked example of the connection of an arenarium, or pit from which pozzolana was extracted, with the streets of the cemetery itself.

From The Atlantic Monthly, Volume 01, No. 07, May, 1858 by Various

In 1880-82 a third and deeper network of galleries was excavated for the sake of extracting the pozzolana, the beds of which support the tufa and the catacombs excavated in it.

From Pagan and Christian Rome by Lanciani, Rodolfo Amedeo

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

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)

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