poz·​zo·​la·​na | \ ˌpät-sə-ˈlä-nə How to pronounce pozzolana (audio) \
variants: or pozzolan \ ˈpät-​sə-​lən How to pronounce pozzolana (audio) \

Definition of pozzolana

: 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

Other Words from pozzolana

pozzolanic \ ˌpät-​sə-​ˈla-​nik How to pronounce pozzolana (audio) , -​ˈlä-​ How to pronounce pozzolana (audio) \ adjective

Examples of pozzolana in a Sentence

Recent Examples on the Web 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

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pozzolana.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of pozzolana

1684, in the meaning defined above

History and Etymology for pozzolana

Italian pozzolana

Learn More About pozzolana

Time Traveler for pozzolana

Time Traveler

The first known use of pozzolana was in 1684

See more words from the same year

Dictionary Entries Near pozzolana




See More Nearby Entries 

Statistics for pozzolana

Cite this Entry

“Pozzolana.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pozzolana. Accessed 29 Jan. 2022.

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

More from Merriam-Webster on pozzolana

Britannica.com: Encyclopedia article about pozzolana


Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
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!