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fibril

American  
[fahy-bruhl, fib-ruhl] / ˈfaɪ brəl, ˈfɪb rəl /

noun

  1. a small or fine fiber or filament.

  2. Botany. any of the delicate hairs on the young roots of some plants.

  3. Cell Biology. any threadlike structure or filament.

fibril British  
/ ˈfaɪbrɪl, fɪ-, faɪˈbrɪlə /

noun

  1. a small fibre or part of a fibre

  2. biology a threadlike structure, such as a root hair or a thread of muscle tissue

"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
fibril Scientific  
/ fī′brəl,fĭb′rəl /

  1. Any of various threadlike fibers or filaments that are constituent parts of a cell or larger structure. Cellulose fibrils are the main component of cell walls in plants. Fibrils make up the contractile part of striated muscle fiber in the body.

Other Word Forms

Etymology

Origin of fibril

1655–65; < New Latin fibrilla, equivalent to Latin fibr ( a ) fiber + -illa diminutive suffix

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Every additional fibril allows for more weight to be supported.

From Science Daily • Apr. 29, 2024

Their image of these fibril assemblies made the cover of the ACS Nano and was put together by first author Weiyan Zhou, who color-coded the image based on where the Nile reds were pointing.

From Science Daily • Apr. 26, 2024

These cross-β fibril assemblies are also useful building blocks within designer biomaterials for medical applications, but their resemblance to their amyloid beta cousins, whose tangles are a symptom of neurodegenerative disease, is concerning.

From Science Daily • Apr. 26, 2024

Secondary nucleation processes, including fibril fragmentation and nucleus formation induced at the amyloid fibril surface69, 70, 136, are of particular relevance to the kinetics of fibril growth.

From Nature • Nov. 8, 2016

Fī′bril, a small fibre; one of the extremely minute threads composing an animal fibre; Fibril′la, a fibril, filament.—n.pl.

From Chambers's Twentieth Century Dictionary (part 2 of 4: E-M) by Various

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.