名詞 duodenum:

1. the part of the small intestine between the stomach and the jejunum

du.o.de.num

n.（名詞）
【復(fù)數(shù)】 du.od.e.na[dô.…-dô.n…, dyô.-, dô-ôd.n-…, dyô-] 或 du.o.de.nums
The beginning portion of the small intestine, starting at the lower end of the stomach and extending to the jejunum.
十二指腸：小腸的開始部分，開始于胃的底部，伸入空腸

來源：
Middle English
中古英語
from Medieval Latin
源自 中世紀(jì)拉丁語
short for intestonum duodônum digitôrum [intestine of twelve fingers (in length)]
intestonum duodônum digitôrum的簡寫 [長度為十二指的長]
from Latin duodônum [genitive pl. of] duodôno [twelve each]
源自 拉丁語 duodônum [] duodôno的所有格復(fù)數(shù) [每個(gè)十二]
from duodecim [twelve] * see duodecimal
源自 duodecim [十二] *參見 duodecimal

【引伸】
du.ode.nal