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| poz·zuo·la·na [ pòtswə lnə ] or poz·zo·la·na [ pòtsə lnə ] or poz·zo·lan [ pótsələn ] |
noun |
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| Definition: |
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volcanic ash used in hydraulic cement: a porous volcanic ash that when mixed with cement hardens either in air or under water
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| [Early 18th century. < Italian pozz(u)olana (terra) "(earth) of Pozzuoli" (town near Naples, S Italy)] |
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