1. Pertaining to, or caused by, aphthae; characterized by aphthae
   "aphthous ulcers"

Encyclopedia: Aphthous

• unscientifically
• unscramble
• unscrew
• unscripted
• unscrupulous
• unscrupulously
• unscrupulousness
• unseal
• unsealed
• unseamanlike
• unseamed
• unsearchable
• unseasonable
• unseasonableness
• unseasonably
• unseasoned
• unseat
• unseaworthy
• unsectarian
• unsecure
• unsecured
• unsecured bond
• unseductive
• unseeable
• unseeded