du·o·de·num
noun/ˌdjuːəˈdiːnəm/
/ˌduːəˈdiːnəm/
(plural duodenums, duodena
(anatomy)/ˌdjuːəˈdiːnə/
/ˌduːəˈdiːnə/
)- the first part of the small intestine, next to the stomach
enlarge image十二指肠 Word Originlate Middle English: from medieval Latin, from duodeni ‘in twelves’, its length being equivalent to the breadth of approximately twelve fingers.