aphthae majores

[mə-jôrēz]
n.
  1. A severe form of aphthae characterized by large numerous, frequently occurring ulcers that may take up to six weeks to heal.Mikulicz' aphthae
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.