Definitions:

1. Metaphorically, describes something deteriorating or festering. ADJECTIVE
   • The ulcerous state of the organization led to is eventual downfall.
2. Refers to a condition where tissue is damaged, leading to the formation of open sores or lesions, often involving infection or inflammation. ADJECTIVE
   • The patient's ulcerous lesions indicated the need for a stronger course of antibiotics.
3. Used to describe something that has the characteristics of, or is affected by, an ulcer. ADJECTIVE
   • The ulcerous wound on his leg was painful and required immediate medical attention.

Synonyms:

• cankerous
• festering
• suppurative