involuntary muscle

noun

: muscle governing reflex functions and not under direct voluntary control
especially : smooth muscle

Examples of involuntary muscle in a Sentence

Recent Examples on the Web Reported symptoms have included seizures, involuntary muscle contractions, loss of consciousness, confusion, vomiting and abnormal heart rates, according to the FDA. Maya Davis, CNN, 3 July 2024 Reported symptoms include seizures, agitation, involuntary muscle contractions, loss of consciousness, confusion, sleepiness, nausea and vomiting, abnormal heart rates, and hyper/hypotension. Kate Gibson, CBS News, 28 June 2024 Hemme was being treated with antipsychotic drugs that had triggered involuntary muscle spasms when she was first questioned. Landon Mion, Fox News, 16 June 2024 Focal dystonia, a neurological disorder that causes involuntary muscle spasms, may also cause the twisties. Colleen Murphy, Health, 22 Mar. 2024 See all Example Sentences for involuntary muscle 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'involuntary muscle.' 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

1840, in the meaning defined above

Time Traveler
The first known use of involuntary muscle was in 1840

Dictionary Entries Near involuntary muscle

Cite this Entry

“Involuntary muscle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/involuntary%20muscle. Accessed 27 Jul. 2024.

Kids Definition

involuntary muscle

noun

Medical Definition

involuntary muscle

noun
: muscle governing reflex functions and not under direct voluntary control
especially : smooth muscle

More from Merriam-Webster on involuntary muscle

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