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
These examples are automatically compiled from online sources to illustrate current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Sea lions experiencing symptoms such as seizures, disorientation, erratic behavior and involuntary muscle spams are washing up on the shores of beaches along the 155 miles of coastline within the two counties. Marissa Wenzke, CBS News, 1 Aug. 2024 Sage Therapeutics said Wednesday that an experimental pill failed to quell involuntary muscle shaking in patients with a neurological condition called essential tremor. Adam Feuerstein, STAT, 24 July 2024 Hemme was being treated with antipsychotic drugs that had triggered involuntary muscle spasms when she was first questioned. Michael Dorgan, Fox News, 20 July 2024 Your muscles spasm Many people experience some sort of involuntary muscle contractions during, and even after, an orgasm. Erika W. Smith, refinery29.com, 18 Sep. 2019 See all Example Sentences for involuntary muscle 

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 8 Nov. 2024.

Kids Definition

involuntary muscle

noun

Medical Definition

involuntary muscle

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

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