poz·zo·lan (p t s -län ) also poz·zo·la·na (-s-län) or poz·zuo·la·na (-sw-)n. 1. A siliceous volcanic ash used to produce hydraulic cement. 2. Any of various artificially produced substances resembling pozzuolana ash. [Italian pozzolana, after Pozzuoli.] poz zo·lanic adj. |
pozzuolana [ˌpɒtswəˈlɑːnə], pozzolana [ˌpɒtsəˈlɑːnə]
n
1. (Earth Sciences / Geological Science) a type of porous volcanic ash used in making hydraulic cements
2. (Miscellaneous Technologies / Building) any of various artificial substitutes for this ash used in cements Also called puzzolana
[from Italian: of Pozzuoli]
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