[pot-suh-lah-nuh; Italian pawt-tsaw-lah-nah]
- a porous variety of volcanic tuff or ash used in making hydraulic cement.
Also poz·zo·lan [pot-suh-luh n] /ˈpɒt sə lən/, poz·zuo·la·na [pot-swuh-lah-nuh; Italian pawt-tswaw-lah-nah] /ˌpɒt swəˈlɑ nə; Italian ˌpɔt tswɔˈlɑ nɑ/, puzzolan, puzzolana.
Origin of pozzolana
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for pozzuolana
In 1775 he discovered in the Velay a rich deposit of pozzuolana, which in due course was worked by the government.
An artificial product which serves perfectly as a pozzuolana is granulated blast-furnace slag.
- a type of porous volcanic ash used in making hydraulic cements
- any of various artificial substitutes for this ash used in cements
German name: puzzolana
C18: from Italian: of Pozzuoli
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012