English

Definition of ileum noun from the Oxford Advanced Learner's Dictionary

 

ileum

 noun
noun
BrE BrE//ˈɪliəm//
 
; NAmE NAmE//ˈɪliəm//
 
(pl. ilea
BrE BrE//ˈɪliə//
 
; NAmE NAmE//ˈɪliə//
 
)
(anatomy)
 
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the third part of the small intestine compare duodenum, jejunum Word Origin late 17th cent.: from medieval Latin, variant of ilium.
See the Oxford Advanced American Dictionary entry: ileum