mouth ulcer

noun

An aphthous ulcer; an open sore in the mouth, or rarely a break in the mucous membrane or the epithelium on the lips or surrounding the mouth.

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Meanings

nounmouth ulcer (plural mouth ulcers)

plural mouth ulcers

  1. An aphthous ulcer; an open sore in the mouth, or rarely a break in the mucous membrane or the epithelium on the lips or surrounding the mouth.

Synonyms & antonyms

Also see
aphthous ulcer
Cite this entry
APA

mouth ulcer. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/mouth%20ulcer

MLA

“mouth ulcer.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/mouth%20ulcer. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “mouth ulcer,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/mouth%20ulcer.

Source: mouth ulcer on Wiktionary, CC BY-SA 4.0.