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单词 pumice
释义

WordReference Random House Learner's Dictionary of American English © 2024
pum•ice /ˈpʌmɪs/USA pronunciation   n. 
    [uncountable]
  1. Rocksa rough or sometimes spongy rock, a form of volcanic glass, used to clean or smooth objects.

WordReference Random House Unabridged Dictionary of American English © 2024
pum•ice  (pum′is),USA pronunciation n., v., -iced, -ic•ing. 
n. 
  1. RocksAlso called pum′ice stone′. a porous or spongy form of volcanic glass, used as an abrasive.

v.t. 
  1. to rub, smooth, clean, etc., with pumice.
  • Latin), in pumicstān pumice stone; see pounce3
  • Latin; compare Old English pumic- (
  • Middle French pomis
  • Latin pūmic-, stem of pūmex pumice stone; replacing Middle English pomis(e), pomish(e), pomice
  • bef. 1000;
pu•mi•ceous  (pyo̅o̅ mish′əs),USA pronunciation adj.  pum′ic•er, n. 

Collins Concise English Dictionary © HarperCollins Publishers::
pumice /ˈpʌmɪs/ n
  1. Also called: pumice stone a light porous acid volcanic rock having the composition of rhyolite, used for scouring and, in powdered form, as an abrasive and for polishing
 vb
  1. (transitive) to rub or polish with pumice
Etymology: 15th Century pomys, from Old French pomis, from Latin pūmex

pumiceous /pjuːˈmɪʃəs/ adj
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更新时间：2025/7/23 14:09:25