1. One of the whitish ulcers cause by thrush

Encyclopedia: Aphtha

• Northern dewberry
• northern dune tansy
• northern Europe
• northern flying squirrel
• northern harrier
• northern hemisphere
• northern holly fern
• Northern Ireland
• northern Jacob's ladder
• northern lights
• Northern lobster
• northern mammoth
• Northern Mariana Islands
• Northern Marianas
• northern oak fern
• northern oriole
• northern parula
• northern phalarope
• northern pike
• northern pin oak
• northern pitch pine
• northern pocket gopher
• northern porgy
• northern red oak
• Northern Rhodesia