di·ver·tic·u·lum /ˌdaɪvɚˈtɪkjələm/ 名詞 單數
  憩室, 膨部, 膨囊
  複數 diverticula
  Div·er·tic·u·lum n.; pl. Diverticula   Anat. A blind tube branching out of a longer one.
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  diverticulum
       n : a herniation through the muscular wall of a tubular organ
           (especially the colon)
       [also: diverticula (pl)]