- a blind, tubular sac or process branching off from a canal or cavity, especially an abnormal, saclike herniation of the mucosal layer through the muscular wall of the colon.
Origin of diverticulum
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for diverticulum
In the same way the bowel may be constricted by a diverticulum.
The gall-bladder arises as a diverticulum of the right primitive lobe.The Works of Francis Maitland Balfour, Volume III (of 4)
Francis Maitland Balfour
In some cases of diverticulum high up, there is a tumor, usually on the left side of the neck.
The size of the diverticulum varies; a common size is that of a duck egg, but the size of a fist has been attained.
This diverticulum contains the blood-vessel and muscle-fibres (fig. 22).
- any sac or pouch formed by herniation of the wall of a tubular organ or part, esp the intestines
C16: from New Latin, from Latin dēverticulum by-path, from dēvertere to turn aside, from vertere to turn
Word Origin and History for diverticulum
"blind tube" (anatomical), 1819, Modern Latin, from Latin deverticulum "a bypath," from devertere "to turn aside" (see divert).
Online Etymology Dictionary, © 2010 Douglas Harper
- A pouch or sac branching out from a hollow organ or structure.
- A pouch or sac branching out from a portion of the gastrointestinal tract, especially the large intestine. A diverticulum can occur as a normal structure, or it can be caused by a hernia.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.