nasoduodenal /ˌneɪzoʊduəˈdiːnəl/ adjective1 •Of or pertaining to a route through the nose into the duodenum, usually with reference to a feeding tube as the route of administration of enteral nutrition.Initially 17 subjects were enrolled in the study, but 5 subjects dropped out due to discomfort related to the nasoduodenal tube. — 2015