[gloh-mer-yuh-luh s, gluh-]
- a compact cluster of capillaries.
- Also called Malpighian tuft. a tuft of convoluted capillaries in the nephron of a kidney, functioning to remove certain substances from the blood before it flows into the convoluted tubule.
Origin of glomerulus
1855–60; < New Latin, equivalent to Latin glomer- (stem of glomus) ball-shaped mass + -ulus -ule
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for glomerulus
Summary of the development of the head-kidney and glomerulus.
Each of these sacs with its contained blood vessels is called a glomerulus.A Civic Biology
George William Hunter
This point is, however, difficult to make sure of owing to the facility with which the glomerulus breaks away.
We have reason to think that the corpuscles and vascular channels in the glomerulus are developed in situ.
On the inner wall of this diverticulum a projection is formed which becomes a glomerulus.
- a knot of blood vessels in the kidney projecting into the capsular end of a urine-secreting tubule
- any cluster or coil of blood vessels, nerve fibres, etc, in the body
C18: from New Latin, diminutive of glomus ball
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
- A small cluster or intertwined mass.
- A tuft of capillaries situated within a Bowman's capsule at the end of a renal tubule in the vertebrate kidney that filters waste products from the blood and thus initiates urine formation.
- The twisted secretory portion of a sweat gland.
- A nerve ending consisting of a cluster of dendritic ramifications and axon terminals surrounded by a glial sheath.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A knot of highly permeable capillaries located within the Bowman's capsule of a nephron. Waste products are filtered from the blood in the glomerulus, initiating the process of urine formation.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.