Definition of duodenum in English:

duodenum

nounduodenums, duodena

Anatomy
  • The first part of the small intestine immediately beyond the stomach, leading to the jejunum.

    • ‘All this then enters the digestive tract and begins its passage from esophagus to stomach to duodenum to small intestine to colon.’
    • ‘It is a tube approximately 20 feet long consisting of three regions; the duodenum, jejunum, and ileum.’
    • ‘The distal duodenum and duodenal jejunal junction is especially susceptible to damage because it is fixed in position.’
    • ‘You may have to have part of your stomach, gall bladder and duodenum (the first bit of your small intestine) removed too.’
    • ‘Multiple biopsies were taken from the duodenum, the gastric antrum, and the distal esophagus.’

Origin

Late Middle English from medieval Latin, from duodeni ‘in twelves’, its length being equivalent to the breadth of approximately twelve fingers.

Pronunciation

duodenum

/ˌdjuːəˈdiːnəm/