Meaning of ulcer

ul•cer

Pronunciation: (ul'sur), [key]
— n.
  1. a sore on the skin or a mucous membrane, accompanied by the disintegration of tissue, the formation of pus, etc.
  2. See
  3. any chronically corrupting or disrupting condition, element, etc.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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