Also calc-tuff [kalk-tuhf] /ˈkælkˌtʌf/.
Origin of calc-tufa
Origin of tufa
1760–70; < Italian tufo < Latin tōfus
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- another name for tufa
- a soft porous rock consisting of calcium carbonate deposited from springs rich in limeAlso called: calc-tufa
C18: from Italian tufo, from Late Latin tōfus
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for calc-tuff
"a porous rock," 1770, from Italian tufa "tufa, porous rock," probably from Latin tufus, tophus "loose, porous volcanic rock," said to be an Oscan-Umbrian loan-word.
Online Etymology Dictionary, © 2010 Douglas Harper
- A soft, friable, and porous sedimentary rock consisting of calcium carbonate and formed by the evaporation of water, especially at the mouth of a hot spring or on a drying lakebed. It is similar to, but harder than, travertine.
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