fasciculation

noun

fas·​cic·​u·​la·​tion fə-ˌsi-kyə-ˈlā-shən How to pronounce fasciculation (audio)
fa-
: muscular twitching involving the simultaneous contraction of contiguous groups of muscle fibers

Examples of fasciculation in a Sentence

Recent Examples on the Web The most common symptom of ALS is weakness, which can start in the hands or feet, usually with muscle atrophy and fasciculations (uncontrolled twitching of the muscles). Dr. Keith Roach, oregonlive, 20 Apr. 2023 Some over-the-counter and prescription drugs can also cause fasciculations. Alex Orlando, Discover Magazine, 13 Feb. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'fasciculation.' 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 fasciculation was in 1938

Dictionary Entries Near fasciculation

Cite this Entry

“Fasciculation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fasciculation. Accessed 15 Jul. 2024.

Medical Definition

fasciculation

noun
fas·​cic·​u·​la·​tion fə-ˌsik-yə-ˈlā-shən, fa- How to pronounce fasciculation (audio)
: muscular twitching involving the simultaneous contraction of contiguous groups of muscle fibers

More from Merriam-Webster on fasciculation

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