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The Collaborative International Dictionary
Jejunum

Jejunum \Je*ju"num\, n. [NL., fr. L. jejunus empty, dry.] (Anat.) The middle division of the small intestine, between the duodenum and ileum; -- so called because usually found empty after death.

Douglas Harper's Etymology Dictionary
jejunum

late 14c., from Latin ieiunum, neuter of ieiunus (see jejune). Translating Greek nestis (Galen). So called because it typically is found empty during dissections, perhaps because it would tend to drain in a body laid on its back.

Wiktionary
jejunum

n. (context anatomy English) The central of the three divisions of the small intestine which lies between the duodenum and the ileum.

WordNet
jejunum

n. the part of the small intestine between the duodenum and the ileum

Wikipedia
Jejunum

The jejunum is the second part of the small intestine in humans and most higher vertebrates, including mammals, reptiles, and birds.

The jejunum lies between the duodenum and the ileum. The jejunum is considered to begin at the attachment of the suspensory muscle of the duodenum to the duodenum, a location called the duodenojejunal flexure. The division between the jejunum and ileum is not anatomically distinct. In adult humans, the small intestine is usually 6-7m long, about two-fifths of which (2.5 m) is the jejunum.

Usage examples of "jejunum".

On the jejunum, Jack used too much of the surgical grease and left himself with a longer than necessary gash to sew shut.

The small intestine is from twenty to twenty-five feet in length, and consists of the Duodenum, Jejunum, and Ileum.

Although somewhat thinner in texture than the jejunum, yet the difference is scarcely perceptible.

There is an instance of coalition of the jejunum with the liver, and Treuner parallels this case.

Fillion mentions an instance of recovery following the perforation of the jejunum by a piece of horn which had been swallowed.