jejuno-, jejun- +

(Latin: the fasting [intestine], the portion of the small intestine between the duodenum and the ileum [so named because early anatomists typically found this organ to be empty in dissection]; original meaning, "hungry, not partaking of food")

duodenojejunostomy
1. The surgical formation of an artificial connection between the duodenum and the jejunum.
2. A surgical operation that joins part of the duodenum and the jejunum with the creation of an artificial opening between them.
esophagojejunogastrostomosis, esophagojejunogastrostomy, gastrojejunoesophagostomy
The surgical interposition of a segment of jejunum (part of the small intestine) between the esophagus and the stomach to preserve alimentary continuity.
esophagojejunoplasty
The surgical repair of a defect in the esophagus by using a segment of jejunum (part of small intestine).
esophagojejunostomy
The surgical creation of a communication between the esophagus and the jejunum.
jejunal
Relating to or a reference to the jejunum.
jejunectomy
The surgical excision of part or all of the jejunum.
jejunely
In an immature manner.
jejuneness
1. Lacking and evidencing lack of experience of life.
2. The quality of being vapid and unsophisticated; jejunity.
3. The quality of lacking nutritive value.
jejunitis
Inflammation of the jejunum of the small intestine.
jejunity
1. The quality of being vapid and unsophisticated.
2. Juvenile; immature; childish: "Her jejune behavior was obvious."
3. The quality of lacking nutritive value.
jejunoileitis
Inflammation of the jejunum and ileum (last portion of the small intestine).
jejunostomy
1. The surgical creation of a permanent opening between the jejunum and the surface of the abdominal wall to allow artificial feeding; also, the opening so established.
2. A surgical operation that creates access from the outside of the body into the middle part of the small intestine jejunum so that nourishment can be directly introduced.
jejunum
Part of the small intestine.

It is half-way down the small intestine between its duodenum and ileum sections.

The term "jejunum" derives from the Latin jejunus, "empty of food, meager", or "hungry". The ancient Greeks noticed at death that this part of the intestine was always empty of food; therefore, the name, jejunum.

The Latin jejunus also gave rise to jejune, "lacking in nutritive value and devoid of substance, significance," or "interest"; and "that which is dull". A "jejune argument" is one which is empty (like the jejunum) and totally devoid of interest.

Quando hic sum, non ieiuno (jejuno) Sabbato; quando Romae sum, ieiuno (jejuno) Sabbato.
When I'm here [in Milan], I do not fast on Saturday; when I'm in Rome, I fast on Saturday.

This thought is attributed to St. Ambrose and is translated in a short version as, "When in Rome, do as the Romans do." The primary advice is to follow the local customs.