'Ulcer' definitions:

Definition of 'ulcer'

From: WordNet
noun
A circumscribed inflammatory and often suppurating lesion on the skin or an internal mucous surface resulting in necrosis of tissue [syn: ulcer, ulceration]

Definition of 'Ulcer'

From: GCIDE
  • Ulcer \Ul"cer\, v. t. To ulcerate. [R.] --Fuller. [1913 Webster]

Definition of 'Ulcer'

From: GCIDE
  • Ulcer \Ul"cer\, n. [F. ulc[`e]re, L. ulcus, gen. ulceris, akin to Gr. ?.]
  • 1. (Med.) A solution of continuity in any of the soft parts of the body, discharging purulent matter, found on a surface, especially one of the natural surfaces of the body, and originating generally in a constitutional disorder; a sore discharging pus. It is distinguished from an abscess, which has its beginning, at least, in the depth of the tissues. [1913 Webster]
  • 2. Fig.: Anything that festers and corrupts like an open sore; a vice in character. [1913 Webster]
  • Cold ulcer (Med.), an ulcer on a finger or toe, due to deficient circulation and nutrition. In such cases the extremities are cold. [1913 Webster]