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tufa |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Tufa \Tu"fa\, [It. fufo soft, sandy stone, L. tofus, tophus. Cf {Tofus}, {Toph}, and {Tophin}.] (Min.) a A soft or porous stone formed by depositions from water, usually calcareous; -- called also {calcareous tufa}. b A friable volcanic rock or conglomerate, formed of consolidated cinders, or scoria.
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