pozzolana

[ pot-suh-lah-nuh; Italian pawt-tsaw-lah-nah ]

noun

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

Word History and Origins

Origin of pozzolana¹

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

Example Sentences

This shows the utter unfitness of the pozzolana beds in which the arenaria are excavated for the construction of the Catacombs.

From Project Gutenberg

The celebrated Pozzolana sand makes the best mortar in the world, from its gritty nature.

From Project Gutenberg

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

From Project Gutenberg