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单词 ulcer
释义

WordReference Random House Learner's Dictionary of American English © 2024
ul•cer /ˈʌlsɚ/USA pronunciation   n. [countable]
  1. Pathologya sore, as on the skin, mouth, or stomach lining, bringing with it the disintegration of tissue, and often the formation of pus.

WordReference Random House Unabridged Dictionary of American English © 2024
ul•cer  (ulsər),USA pronunciation n. 
  1. Pathologya sore on the skin or a mucous membrane, accompanied by the disintegration of tissue, the formation of pus, etc.
  2. PathologySee peptic ulcer. 
  3. any chronically corrupting or disrupting condition, element, etc.
  • Latin ulcer- (stem of ulcus); akin to Greek hélkos
  • Middle English 1350–1400

Collins Concise English Dictionary © HarperCollins Publishers::
ulcer /ˈʌlsə/ n
  1. a disintegration of the surface of the skin or a mucous membrane resulting in an open sore that heals very slowly
    See also peptic ulcer
  2. a source or element of corruption or evil
Etymology: 14th Century: from Latin ulcus; related to Greek helkos a sore
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