Final answer:
An enteroduodenostomy is a surgical procedure that creates an artificial connection between the duodenum and another part of the small intestine.
Step-by-step explanation:
The medical term for the formation of a passage or opening between the duodenum and the intestine is an enteroduodenostomy. This term describes a surgical connection created between the duodenum, which is the first section of the small intestine immediately following the stomach, and another part of the small intestine, which typically refers to the jejunum or ileum. The duodenum plays a critical role in the digestion process by mixing chyme with digestive juices from the pancreas, liver, and gallbladder, which aid in the absorption of nutrients through the intestinal wall.