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.
- di·ver·tic·u·lar, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use diverticulum in a sentence
It has commenced to bud off diverticula, which subsequently become the tubules of the Wolffian body (vide fig. 13, wd).
The diverticula from the alimentary cavity form the water-vascular system and the somatic and splanchnic layers of mesoblast.
The cavity of the diverticula after the separation of the water-vascular system, forms the body-cavity.
By stage K the hepatic diverticula have begun to bud out a number of small hollow knobs.
In Echinodermata a certain amount of mesenchyme appears before the epithelial mesoderm, which is formed later as gut-diverticula.
British Dictionary definitions for diverticulum
any sac or pouch formed by herniation of the wall of a tubular organ or part, esp the intestines
- diverticular, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for diverticulum
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.