rhizoverbBeta
DictionaryjejunumMiddle small intestine
noun

jejunum

jih-JOO-num/dʒɪˈdʒuːnəm/

The middle section of the small intestine.

The jejunum absorbs many nutrients as food passes through the small intestine.

Medical educational illustration of small intestine beneath stomach, jejunum middle coils gently emphasized warm coral while duodenum and ileum muted; anatomically coherent no text.
Etymology
jejunumLatinempty

Latin ieiunus means “empty”: this intestinal section was named because it was typically found empty during dissections, perhaps because it tended to drain when the body lay on its back.

In context

Nuttall's Biology11:39
the absorption of those lipid soluble nutrients the jejunum is the long middle segment of the small intestine and is the location where the majority of nutrient absorption occurs
Digestive System Part 1

More examples

  • Food reaches the jejunum after passing through the duodenum.
  • The surgeon examines the jejunum for signs of injury.
  • A blockage in the jejunum can cause abdominal pain.

Forms

jejunum · jejuna · jejunums

jejunal adjective — Relating to the middle small intestine.