pozzolana

noun

poz·​zo·​la·​na ˌpät-sə-ˈlä-nə 

variants or pozzolan

ˈpät-sə-lən 

: finely divided siliceous or siliceous and aluminous material that reacts chemically with slaked lime at ordinary temperature and in the presence of moisture to form a strong slow-hardening cement

pozzolanic

ˌpät-sə-ˈla-nik  -ˈlä- 

adjective

Examples of pozzolana in a Sentence

Recent Examples on the Web

Della Cultura This meant that during wall construction, the mixture of lime, pozzolana and stones was still hot due to a thermal reaction. —Reuters, NBC News, 25 Mar. 2024

Colored glass, marble and a special volcanic stone called pozzolana pull the artwork together. —Christopher Parker, Smithsonian Magazine, 21 Dec. 2023

For instance, in the mortar used during the first phase of construction, pink pozzolana was used exclusively, while the mortar used in the second phase also contained volcanic glass—typical of a different deposit of pink pozzolana further afield. —Jennifer Ouellette, Ars Technica, 17 Feb. 2022

The ancient Romans did something similar, using volcanic ash in their pozzolana concrete, examples of which have lasted thousands of years. —IEEE Spectrum, 4 June 2018

And so Giocondo built structures that mixed lime and pozzolana, as Vitruvius instructed. —Jonathan Schifman, Popular Mechanics, 12 Oct. 2017

Clay was a major component, and a volcanic ash, today called pozzolana, was also used. —Jonathan Schifman, Popular Mechanics, 12 Oct. 2017

Word History

Etymology

Italian pozzolana

First Known Use

1684, in the meaning defined above

Rhymes for pozzolana

• avifauna
• hinayana
• macrofauna
• mahayana
• majorana
• marianna
• marihuana
• marijuana
• microfauna
• ana
• bwana
• dhyana