Definition of "glomerulus" [‖Glo•mer•u•lus]

• Anatomy A small cluster or mass of blood vessels or nerve fibers. (noun)
• Anatomy 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. (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.

• "If you are speaking at the Society for Nephrology meeting, you probably don’t have to explain what a glomerulus is or convince them that its study is important for understanding kidney function."
• "Enteropneusta called the glomerulus, a vascular complex placed on either side of the anterior portion of the stomochord, projecting into the proboscis-coelom."
• "The glomerulus is a lobulated net-work of convoluted capillary bloodvessels, held together by scanty connective tissue."