ulcerous
Concise Oxford English Dictionary © 2008 Oxford University Press:
ulcer/ˈʌlsə(r)/
▶noun an open sore on an external or internal surface of the body, caused by a break in the skin or mucous membrane which fails to heal.
– derivatives
ulcered adjective,
ulcerous adjective.
ulcered adjective,
ulcerous adjective.
– origin ME: from L. ulcus, ulcer-.
'ulcerous' also found in these Oxford entries:

