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Definition of Mouth ulcer
1. Noun. A open sore in the mouth, or rarely a break in the mucous membrane or the epithelium on the lips or surrounding the mouth. ¹
¹ Source: wiktionary.com
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1. Noun. A open sore in the mouth, or rarely a break in the mucous membrane or the epithelium on the lips or surrounding the mouth. ¹
¹ Source: wiktionary.com