DIVERTICULITIS Meaning of DIVERTICULITIS in English [ ˌdʌɪvətɪkjʊ'lʌɪtɪs ]■ noun Medicine inflammation of a diverticulum, especially in the colon, causing pain and disturbance of bowel function. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004