calctufa

- 3 dictionary results

calc-tu⋅fa

[kalk-too-fuh, -tyoo-]

–noun

tufa (def. 1).

Also, calc-tuff [kalk-tuhf]

Origin:
1815–25; calc- + tufa

[too-fuh, tyoo-]

–noun Geology.

1.	Also called calcareous tufa, calc-tufa, calc-tuff. a porous limestone formed from calcium carbonate deposited by springs or the like. Compare travertine.

2.	(not in technical use) tuff².

Origin:
1760–70; < It tufo < L tōfus

Related forms:

tu⋅fa⋅ceous [too-fey-shuh

s, tyoo-]

, adjective

Word Origin & History

tufa

"a porous rock," 1770, from It. tufa, from L. tophus "loose, porous volcanic rock," an Oscan-Umbrian loan-word.

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