Definition of "irritable bowel syndrome" []

• A chronic disorder characterized by motor abnormalities of the small and large intestines, causing variable symptoms including cramping, abdominal pain, constipation, and diarrhea. Also called irritable colon, spastic colon. (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.