Apedia

Tufa N Porous Kind Limestone Formed Precipitation Calcium

Word tufa
Definition n. A porous kind of limestone formed by precipitation of calcium carbonate from water, often found near mineral springs or in dried lakebeds.
Sentence ...some miraculous conjunction of the soil, the air, and some substance that dripped from the tufa walls of that labyrinth preserved them almost intact.
Source Baudolino, Umberto Eco, p.486

Tags: language::english, topic::vocabulary

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