ileumBrE /ˈɪliəm/ 🔊NAmE /ˈɪliəm/ 🔊 noun (plural ilea BrE /ˈɪliə/ 🔊 NAmE /ˈɪliə/ 🔊 ) (anatomy 解剖学) the third part of the small intestine 回肠 ➡ compare duodenum, jejunum ▸ ileal BrE /ˈɪliəl/ 🔊NAmE /ˈɪliəl/ 🔊 adjective