sigmoid
adjective medical specialized uk/ˈsɪɡ.mɔɪd/ us/ˈsɪɡ.mɔɪd/
S形的
shaped like the letter S
the sigmoid colon S形结肠
和S形结肠有关的
relating to the sigmoid colon (= an S-shaped part of the colon near the rectum and anus)
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