Learn how to say Duodenum correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word duodenum:
noun (plural duodenums or duodena /-ˈdiːnə/)
the first part of the small intestine immediately beyond the stomach, leading to the jejunum.
late Middle English: from medieval Latin, from duodeni ‘in twelves’, its length being equivalent to the breadth of approximately twelve fingers