Origin: 1545–55; < It travertino, equiv. to tra- across (< L trāns-trans-) + (ti)vertino < L Tīburtīnus, equiv. to Tīburt- (s. of Tīburs) the territory of Tibur (see Tivoli) + -īnus-ine1
A light-colored porous calcite, CaCO3, deposited from solution in ground or surface waters and forming, among other deposits, stalactites and stalagmites.
A compact calcium carbonate used as a facing material in construction.
[French, from Italian travertino, alteration of tivertino, from Latin (lapis) tīburtīnus, (stone) of Tibur (Tivoli), an ancient city of central Italy.]