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单词 tuff
释义

WordReference Random House Unabridged Dictionary of American English © 2024
tuff1  (tuf ),USA pronunciation adj. [Slang.]
  1. Slang Termstough (def. 13).

tuff2  (tuf ),USA pronunciation n. [Geol.]
  1. Geologya fragmental rock consisting of the smaller kinds of volcanic detritus, as ash or cinder, usually more or less stratified. Also called volcanic tuff. 
  • Italian tufo. See tufa
  • French tuf
  • 1560–70;
tuff•a•ceous  (tu fā′shəs),USA pronunciation adj. 
Collins Concise English Dictionary © HarperCollins Publishers::
tuff /tʌf/ n
  1. a rock formed by the fusing together on the ground of small rock fragments (less than 2 mm across) ejected from a volcano
Etymology: 16th Century: from Old French tuf, from Italian tufo; see tufa

tuffaceous /tʌˈfeɪʃəs/ adj
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更新时间：2025/7/23 17:45:46