Advertisement - Continue reading below

Definition of "ileum" [‖Il•e•um]

  • The terminal portion of the small intestine extending from the jejunum to the cecum. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "ileum" in a sentence
  • "The ileum is shorter, there is no sacculus rotundus, and the large intestine has no caecum, none of the characteristic sacculations of the rabbit's colon, and does not loop back to the stomach before the rectum section commences."
  • "The ileum is the lower part of the small intestine."
  • "Okay - the Crohn's was affecting my terminal ileum, that is where the small intestine meets the large intestine."