fibril

noun

fi·​bril ˈfī-brəl How to pronounce fibril (audio) ˈfi- How to pronounce fibril (audio)
: a small filament or fiber: such as
a
b(1)
: one of the fine threads into which a striated muscle fiber can be longitudinally split
(2)
fibrillar adjective

Examples of fibril in a Sentence

Recent Examples on the Web
These examples are automatically compiled from online sources to illustrate current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Similar processes might underlie the development of protein aggregates tied to other neurodegenerative disorders, such as the amyloid fibrils found in the brains of people with Alzheimer’s disease or the synuclein protein deposits implicated in Parkinson’s disease. Trevor Grandpre, Scientific American, 14 Aug. 2024 Amyloidosis is a group of diseases that produce abnormal proteins called amyloid fibrils that can block and damage glomeruli. Kashif J. Piracha, Verywell Health, 12 July 2024 Cryo-electron microscopy has now uncovered fibrils of an unexpected protein. Big Think, 24 June 2024 This diagram shows how gold ions adhere to a sponge of protein fibrils, in order to separate the gold from other elements. IEEE Spectrum, 14 Mar. 2024 Misfolded proteins start to clump together into small aggregates, then bigger chains called fibrils, and finally into huge, rectangular structures called amyloid. Amber Dance, Discover Magazine, 13 Apr. 2023 Five of these helices wind together to make up a microfibril, and thousands of microfibrils gather to form a fibril. Ed Yong, Discover Magazine, 15 June 2011 Finally, there is convincing evidence that the most readily detectable form of amyloid, known as a fibril, is not the worst type. Sam Gandy, STAT, 17 June 2021 Some researchers thought the mineral was mostly contained inside fibrils; others believed the mineral cladded the protein like armor. Angus Chen, Scientific American, 3 May 2018

Word History

Etymology

New Latin fibrilla, diminutive of Latin fibra

First Known Use

1664, in the meaning defined above

Time Traveler
The first known use of fibril was in 1664

Dictionary Entries Near fibril

Cite this Entry

“Fibril.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fibril. Accessed 10 Nov. 2024.

Medical Definition

fibril

noun
fi·​bril ˈfīb-rəl How to pronounce fibril (audio) ˈfib- How to pronounce fibril (audio)
: a small filament or fiber: as
a
: one of the fine threads into which a striated muscle fiber can be longitudinally split
Last Updated: - Definition revised
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