What does ileal mean?
The adjective “ileal” means relating to the ileum, the final section of the small intestine, between the jejunum and the large intestine. It is used mainly in medicine, anatomy, and surgery, especially when discussing the terminal ileum, the portion nearest the large intestine. Common expressions include “terminal ileum,” “ileal artery,” “ileal resection,” and “ileal conduit.” Because the term is specialized and anatomical, it is not ordinarily used in general conversation. The adjective is derived from the noun “ileum” by adding the suffix “-al,” which forms an adjective expressing relation or connection. Its association with the terminal ileum is especially significant in discussions of Crohn's disease, since inflammation in that region can be a prominent feature of the condition.
adjectiveRelating to or affecting the ileum, the final section of the small intestine. In medical usage, the term often specifically describes the terminal ileum.
- Relating to or affecting the ileum, especially the terminal ileum.
"The scan revealed inflammation in the terminal ileum, consistent with Crohn's disease."
"The surgeon performed an ileal resection to remove the diseased segment of intestine."
"Endoscopy showed ileal inflammation extending into the adjoining colon."
The ileum is the body's final small-intestinal stop—and “ileal” is the medical label for anything relating to that region.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does ileal come from?
“Ileal” was formed in the 19th century from the Latin-derived anatomical term “ileum” and the suffix “-al,” meaning “pertaining to.” The medical term “ileum” comes through Latin from Greek, where eileós referred to the intestines and was associated with twisting or colic. Related medical and anatomical forms include “ileitis,” meaning inflammation of the ileum, and “ileocecal,” referring to the junction of the ileum and cecum.
Related word forms
How ileal is actually used
This is primarily a medical and anatomical term. Although it can mean relating to the ileum generally, it is often used more specifically for the terminal ileum.
Easily confused with ileal
“Ileal” is an adjective describing the ileum, whereas “ileum” is a noun naming the final part of the small intestine.