glo·​mer·​u·​lus | \ glə-ˈmer-(y)ə-ləs How to pronounce glomerulus (audio) , glō- \
plural glomeruli\ glə-​ˈmer-​(y)ə-​ˌlī How to pronounce glomerulus (audio) , -​ˌlē , glō-​ \

Definition of glomerulus

: a small convoluted or intertwined mass especially : a tuft of capillaries at the point of origin of each vertebrate nephron that passes a protein-free filtrate to the surrounding Bowman's capsule

First Known Use of glomerulus

1856, in the meaning defined above

History and Etymology for glomerulus

New Latin, glomerulus, glomerule, diminutive of Latin glomer-, glomus ball; akin to Latin globus globe

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The first known use of glomerulus was in 1856

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Cite this Entry

“Glomerulus.” Dictionary, Merriam-Webster, Accessed 13 Jun. 2021.

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More Definitions for glomerulus


glo·​mer·​u·​lus | \ glə-ˈmer-(y)ə-ləs, glō- How to pronounce glomerulus (audio) \
plural glomeruli\ -​ˌlī How to pronounce glomerulus (audio) , -​ˌlē How to pronounce glomerulus (audio) \

Medical Definition of glomerulus

: a small convoluted or intertwined mass (as of organisms, nerve fibers, or capillaries): as
a : a tuft of capillaries that is covered by epithelium, is situated at the point of origin of each vertebrate nephron, and normally passes a protein-free filtrate from the blood to the surrounding Bowman's capsule — see renal corpuscle
b : the convoluted secretory part of a sweat gland
c : a dense entanglement of nerve fibers situated in the olfactory bulb and containing the primary synapses of the olfactory pathway

called also olfactory glomerulus

More from Merriam-Webster on glomerulus Encyclopedia article about glomerulus


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