Any of various sedimentary rocks, as travertine, made up of deposits of calcium carbonate formed by evaporation or precipitation in or near a cave, spring, lake, etc.
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.
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 can also be precipitated by algae or bacteria.
Other Word Forms
Origin of tufa
Obsolete Italian tufa, tufofrom Latin tōfus
American Heritage Dictionary of the English Language, 5th Edition
Ten shafts lined with slabs of tufa which were there found may have been the approaches to tombs or may have served as wells.
Calcareous tufa or travertine occurs in the valley of Matlock and elsewhere, and in some places is still being deposited by springs.
Catacomb of benches cut out of the tufa rock.
The igneous formation of which the greater part of the Roman Campagna is, in its superior portion, composed, contains three strata known under the common name of tufa, - the " stony," " granular," and " sandy " tufa, - the last being commonly known as pozzolana.
The stony tufa (tufa litoide) is quarried as building-stone.