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tufa

UK/ˈt(j)uːfə/ US/ˈtufʌ/ uncommon

noun

1.

a soft porous rock consisting of calcium carbonate deposited from springs rich in lime

Synonyms
2.

hard volcanic rock composed of compacted volcanic ash

Synonyms

Origin

From Italian tufo, from Latin tōfus or tōphus. Doublet of tuff.

Related words

Broader terms

WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.