noun🔗ShareDuodenoThe first part of the small intestine, starting at the lower end of the stomach and extending to the jejunum."The doctor examined the patient's duodenum to see if any ulcers were present in the first part of the small intestine. "El médico examinó el duodeno del paciente para ver si había úlceras presentes en la primera parte del intestino delgado.anatomyorganbodymedicinephysiologypartChat with AIVocabulary GamePractice Reading