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单词 ulcerate
释义 ulcerate
 —ulceration,  n.  
 /ul"seuh rayt'/,  v.  , ulcerated, ulcerating.
  v.i.  
  1. to form an ulcer; become ulcerous: His skin ulcerated after exposure to radioactive material.
  v.t.  
  2. to cause an ulcer on or in: Continued worry ulcerated his stomach.
 [1375-1425; late ME < L ulceratus (ptp. of ulcerare to make sore), equiv. to ulcer- (see ULCER) + -atus -ATE1]
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