单词 | rectum |
释义 | rec·tum ![]() n. pl. rec·tums or rec·ta (-tə) The terminal portion of the large intestine, extending from the sigmoid colon to the anal canal. [Middle English, from Latin (intestīnum) rēctum, straight (intestine), neuter of rēctus; see reg- in the Appendix of Indo-European roots.] |
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