pozzolana

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

/ ˌpɒt səˈlɑ nə; Italian ˌpɔt tsɔˈlɑ nɑ /

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noun

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

QUIZ

QUIZ YOURSELF ON AFFECT VS. EFFECT!

In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”

Question 1 of 7

The rainy weather could not ________ my elated spirits on my graduation day.

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Also poz·zo·lan

[pot-suh-luhn], /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

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