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单词 tufa
释义

WordReference Random House Unabridged Dictionary of American English © 2024
tu•fa  (to̅o̅′fə, tyo̅o̅′-),USA pronunciation n. [Geol.]
  1. GeologyAlso called calcareous tufa, calc-tufa, calc-tuff. a porous limestone formed from calcium carbonate deposited by springs or the like. Cf. travertine. 
  2. Geology(not in technical use) tuff 2.
  • Latin tōfus
  • Italian tufo
  • 1760–70;
tu•fa•ceous  (to̅o̅ fā′shəs, tyo̅o̅-),USA pronunciation adj. 
Collins Concise English Dictionary © HarperCollins Publishers::
tufa /ˈtjuːfə/ n
  1. a soft porous rock consisting of calcium carbonate deposited from springs rich in lime
Etymology: 18th Century: from Italian tufo, from Late Latin tōfus

tufaceous /tjuːˈfeɪʃəs/ adj
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更新时间：2024/9/20 19:34:25