1. Surgical construction of an artificial excretory opening through the abdominal wall into the ileum.
2. The opening created by such a surgical procedure.

[ILE(UM) + -STOMY.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.