Pronunciation: (ku-los'tu-mē), [key]
—pl. -mies. Surg.
1. the construction of an artificial opening from the colon through the abdominal wall, thus bypassing a diseased portion of the lower intestine and permitting the passage of intestinal contents.
2. the opening so constructed.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.