ulcerationKK [ˏʌlsɚˋeʃən] /ˌʌlsɚˈeɪʃən/發音名詞1潰瘍形成、潰爛醫學Long-term use of these painkillers can cause ulceration of the stomach.長期服用這類止痛藥可能造成胃部潰瘍。2潰瘍、潰瘍面The doctor found several small ulcerations inside her mouth.醫師在她口腔內發現幾處小潰瘍。