sphincter

noun

sphinc·​ter ˈsfiŋ(k)-tər How to pronounce sphincter (audio)
: an annular muscle surrounding and able to contract or close a bodily opening
sphincteric adjective

Examples of sphincter in a Sentence

Recent Examples on the Web But the doctors confirmed using a method called manometry that patients’ upper esophageal sphincters simply would not relax — not after a meal of a sandwich, glass of milk, and candy bar, nor after doctors used a catheter to squirt several ounces of air beneath the stubborn valve. Rae Ellen Bichell, USA TODAY, 3 Sep. 2024 In more severe cases, surgical options such as a sling or an artificial urinary sphincter may be necessary. Peter Weiss, Verywell Health, 1 Aug. 2024 Director Shawn Levy stages the cartoonish violence with less verve than David Leitch’s in Deadpool 2, which featured the franchise’s paradigmatic transition — from the close-up of a sphincter to a human eye — making the point that this is all excrement. Armond White, National Review, 26 July 2024 This includes the urethral sphincters, a pair of muscular valves that regulate urine flow from the bladder to the urethra. Robert Burakoff, Verywell Health, 15 July 2024 See all Example Sentences for sphincter 

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

Word History

Etymology

Late Latin, from Greek sphinktēr, literally, band, from sphingein to bind tight

First Known Use

1578, in the meaning defined above

Time Traveler
The first known use of sphincter was in 1578

Dictionary Entries Near sphincter

Cite this Entry

“Sphincter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sphincter. Accessed 19 Sep. 2024.

Kids Definition

sphincter

noun
sphinc·​ter ˈsfiŋ(k)-tər How to pronounce sphincter (audio)
: a ringlike muscle surrounding a body opening that is able to make the opening smaller or close it

Medical Definition

sphincter

noun
sphinc·​ter ˈsfiŋ(k)-tər How to pronounce sphincter (audio)
: an annular muscle surrounding and able to contract or close a bodily opening see anal sphincter, cardiac sphincter, precapillary sphincter, pyloric sphincter
sphincteral adjective

More from Merriam-Webster on sphincter

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