Dictionary.com
Thesaurus.com

calc-tufa

American  
[kalk-too-fuh, -tyoo-] / ˈkælkˌtu fə, -ˌtyu- /
Also calc-tuff

noun

  1. tufa.


calc-tufa British  
/ ˈkælkˌtuːfə, ˈkælkˌtʌf /

noun

  1. another name for tufa

"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

Etymology

Origin of calc-tufa

First recorded in 1815–25; calc- + tufa