peristalsis

noun
peri·​stal·​sis | \ ˌper-ə-ˈstȯl-səs How to pronounce peristalsis (audio) , -ˈstäl-, -ˈstal- How to pronounce peristalsis (audio) \
plural peristalses\ ˌper-​ə-​ˈstȯl-​ˌsēz How to pronounce peristalsis (audio) , -​ˈstäl-​ , -​ˈstal-​ \

Definition of peristalsis

: successive waves of involuntary contraction passing along the walls of a hollow muscular structure (such as the esophagus or intestine) and forcing the contents onward

Examples of peristalsis in a Sentence

Recent Examples on the Web In fact, while your stomach will typically make writhing motions called peristalsis to move food along to the stomach, the competitive eater’s stomach remained more still. Bruce Y. Lee, Forbes, 5 July 2021 In other mammals, the wavelike peristalsis of the intestinal muscles are consistent in all directions. Tess Joosse, Science | AAAS, 27 Jan. 2021 The top squeezes, then the middle, then the bottom (this process is technically known as peristalsis), and this helps propel food through the organ. Maggie O'neill, Health.com, 29 Apr. 2020 The nervous-immune connection is intriguing in light of recent research suggesting that chemical cross talk between gut macrophages and nerve fibers can control peristalsis, the process that moves food through the digestive tract. Esther Landhuis, Scientific American, 27 Mar. 2020 Fat innkeepers then use peristalsis to fill their burrows with water so that the mucous can trap the critters, like plankton, and bacteria that the water brings with it. Daisy Hernandez, Popular Mechanics, 13 Dec. 2019 This routine trains a competitive eater’s body to stop gastric peristalsis when gorging on food. Currie Engel, Time, 4 July 2019 This motion mimics how our intestines and esophagus move food around our body — a process known as peristalsis. James Vincent, The Verge, 30 Mar. 2018 But peristalsis instead of these rotational forces is gentler, and would allow fuel to be manufactured in one slow, continuous process, rather than in batches. James Vincent, The Verge, 30 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'peristalsis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of peristalsis

1847, in the meaning defined above

History and Etymology for peristalsis

New Latin, from Greek peristaltikos peristaltic

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Time Traveler for peristalsis

Time Traveler

The first known use of peristalsis was in 1847

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Dictionary Entries Near peristalsis

peristalith

peristalsis

peristaltic

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Cite this Entry

“Peristalsis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/peristalsis. Accessed 7 Dec. 2021.

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More Definitions for peristalsis

peristalsis

noun
peri·​stal·​sis | \ ˌper-ə-ˈstȯl-səs How to pronounce peristalsis (audio) , -ˈstäl- How to pronounce peristalsis (audio) , -ˈstal- \
plural peristalses\ -​ˌsēz How to pronounce peristalsis (audio) \

Medical Definition of peristalsis

: successive waves of involuntary contraction passing along the walls of a hollow muscular structure (as the esophagus or intestine) and forcing the contents onward — compare segmentation sense 2

More from Merriam-Webster on peristalsis

Britannica English: Translation of peristalsis for Arabic Speakers

Britannica.com: Encyclopedia article about peristalsis

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