Found 2 items, similar to calc-tufa.
English → English (WordNet) Definition: calc-tufa calc-tufa n : a soft porous rock consisting of calcium carbonate deposited from springs rich in lime [syn: tufa]
English → English (gcide) Definition: Calc-tufa Calc-tufa \Calc"-tu`fa\, n. [G. kalk (l. calx) lime + E. tufa.] See under Calcite. [1913 Webster]