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| ul·cer [ úlssər ] (plural ul·cers) |
noun |
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| Definition: |
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1. internal sore: a slow-healing sore on the surface of a mucous membrane, especially the membrane lining the stomach or other part of the digestive tract
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2. external sore: a suppurating sore on the skin that does not heal and results in the destruction of tissue
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3. bad influence: a corrupting or debilitating influence
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| [14th century. < Latin ulcer-, stem of ulcus "a sore"] |
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 ul·cer·ous adjective |
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