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tufa

tu·fa

tufa

 
pronunciation:
tu f [or] tyu f
features:
Word Combinations (noun)
part of speech: noun
definition 1: a limestone usu. of calcium carbonate deposited by ground water, springs, lakes, or the like.
definition 2: a rock formed from volcanic ash; tuff.
Word CombinationsSubscriber feature About this feature
derivation: tufaceous (adj.)