aphtha
/ˈæfθə/
noun
- A small, painful sore inside the mouth, often white or yellow with a red border; a canker sore.
- She rinsed her mouth with salt water to soothe the aphtha.
- The dentist said the aphtha would heal on its own in about a week.
- I got an aphtha on my tongue after biting it while eating.
Synonyms