- Canker sores.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Examples from the Web for aphthae
It was attended by an affection of the throat and mouth—an angina with aphthae or thrush of the palate.
Sometimes the bowel became gangrenous, while aphthae would appear in the mouth and fauces.