mi·​cro·​fi·​bril ˌmī-krō-ˈfī-brəl How to pronounce microfibril (audio)
: a fine fibril
especially : one of the submicroscopic elongated bundles of cellulose of a plant cell wall
microfibrillar adjective

Examples of microfibril in a Sentence

Recent Examples on the Web 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

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'microfibril.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1938, in the meaning defined above

Time Traveler
The first known use of microfibril was in 1938

Dictionary Entries Near microfibril

Cite this Entry

“Microfibril.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/microfibril. Accessed 21 Sep. 2023.

Medical Definition


mi·​cro·​fi·​bril -ˈfīb-rəl, -ˈfib- How to pronounce microfibril (audio)
: an extremely fine fibril
microfibrillar adjective

More from Merriam-Webster on microfibril

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