jejunum (n.)youdaoicibaDictYouDict[jejunum 词源字典]
late 14c., from Latin ieiunum, neuter of ieiunus (see jejune). Translating Greek nestis (Galen). So called because it typically is found empty during dissections, perhaps because it would tend to drain in a body laid on its back.[jejunum etymology, jejunum origin, 英语词源]