noun🔗Share回肠 The last, and usually the longest, division of the small intestine; the part between the jejunum and large intestine."During digestion, nutrients are absorbed into the bloodstream through the walls of the ileum. "在消化过程中,营养物质会通过回肠的肠壁被吸收到血液里。anatomyorganbodyphysiologymedicinebiologyChat with AIVocabulary GamePractice Reading