diverticulum
/ˌdaɪvɜːˈtɪkjʊləm/noun
(pl. diverticula/-lə/)
1- Anatomy & Zoology a blind tube leading from a cavity or passage【剖, 动】憩室。
1.1
- Medicine an abnormal sac or pouch formed at a weak point in the wall of the alimentary tract【医】消化道憩室病。
词源
early 19th cent.: from medieval Latin， variant of Latin deverticulum 'byway'， from devertere 'turn down or aside'.