- See under hemorrhoid.
- Usually hemorrhoids. Pathology. an abnormally enlarged vein mainly due to a persistent increase in venous pressure, occurring inside the anal sphincter of the rectum and beneath the mucous membrane (internal hemorrhoid) or outside the anal sphincter and beneath the surface of the anal skin (external hemorrhoid).
Origin of hemorrhoid
1350–1400; Middle English emoroides (plural) < Latin haemorrhoid(a) < Greek haimorroḯda (adj.) discharging blood
Also called piles.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- Hemorrhoids beneath the mucous membrane of the anal sphincter.
- An itching or painful mass of dilated veins in swollen anal tissue.
- hemorrhoids The pathological condition in which such painful masses occur.piles
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.