ulcerative
  潰瘍的; 潰瘍性的
  ul·cer·a·tive /ˈəlsəˌretɪv, ˈəls(ə)rətɪv/ 形容詞
  潰瘍的,潰瘍性的
  Ul·cer·a·tive a. Of or pertaining to ulcers; as, an ulcerative process.
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  ulcerative
       adj : of or relating to or characterized by ulceration;
             "ulcerative colitis"