Ulcerate

The sharp edges of the metal sheets can ulcerate the skin on contact.

Regular exposure to extreme temperatures can ulcerate the skin and lead to frostbite.

The metal in the old car began to ulcerate and rust.

The old books began to ulcerate and crumble due to the effects of humidity.

The old clothes began to ulcerate and disintegrate in the damp basement.

The old car's paint began to ulcerate and peel off due to exposure to the elements.

The milk began to ulcerate and curdle in the heat.

The infection caused the wound to ulcerate and spread to other parts of the body.

The cut on her finger started to ulcerate after it got infected.