Pronunciation: (il"ē-os'tu-mē), [key]
—pl. -mies. Surg.
1. the construction of an artificial opening from the ileum through the abdominal wall, permitting drainage of the contents of the small intestine.
2. the opening so constructed.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.