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tenesmus 里急后重; 里急后重; 下坠 里急後重; 里急後重; 下坠 tenesmus n 1: painful spasm of the anal sphincter along with an urgent desire to defecate without the significant production of feces; associated with irritable bowel syndrome Tenesmus \Te*nes"mus\, n. [NL., fr. Gr. ?, fr. ? to stretch: cf.
L. tenesmos.] (Med.) An urgent and distressing sensation, as if a discharge from the intestines must take place, although none can be effected; -- always referred to the lower extremity of the rectum. [1913 Webster] {Vesical tenesmus}, a similar sensation as to the evacuation of urine, referred to the region of the bladder. [1913 Webster]
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