aphthae

/ˈæfθi/
noun
  1. Small, painful sores that appear inside the mouth, often on the tongue, gums, or inner cheeks; also called canker sores.
    • Spicy foods can sometimes make aphthae more painful.
    • The doctor said the aphthae would heal on their own within a week or two.
    • I got a few aphthae after biting my cheek while eating.
Synonyms
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