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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
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

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 21 Nov. 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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!