Noun ulceration has 2 senses
  1. ulcer, ulceration - a circumscribed inflammatory and often suppurating lesion on the skin or an internal mucous surface resulting in necrosis of tissue
    --1 is a kind of lesion
    --1 has particulars:
     aphthous ulcer; bedsore, pressure sore, decubitus ulcer; chancroid; peptic ulcer, peptic ulceration; canker; noli-me-tangere; noma
  2. ulceration - the process of ulcer formation; the process of becoming ulcerated
    --2 is a kind of
    organic process, biological process
    Derived form: verb ulcerate1