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small intestine
noun
: the narrow part of the intestine that lies between the stomach and colon, consists of duodenum, jejunum, and ileum, secretes digestive enzymes, and is the chief site of the digestion of food into small molecules which are absorbed into the body
Examples of small intestine in a Sentence
Recent Examples on the Web
Surgical removal of the last portion of the small intestines can lead to vitamin K deficiency because fat-soluble vitamins are usually absorbed in the small intestines.
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Colleen Doherty, Verywell Health, 13 Feb. 2025
Oral bioavailability, the bioavailability of drugs that are swallowed or otherwise delivered into the stomach, is affected by several factors, including the pH of the stomach and small intestine and enzymes and metabolism in the gastrointestinal (GI) tract.
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Paul McClure 13, New Atlas, 13 Feb. 2025
Unlike long-chain fatty acids, MCTs are absorbed intact from the small intestine.
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Chelsea Rae Bourgeois, Rdn, Ld, Health, 4 Feb. 2025
The small intestine, the narrowest part of the system, is at the greatest risk of obstruction and possible damage.
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Adrianna Rodriguez, USA TODAY, 28 Nov. 2024
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Word History
First Known Use
1767, in the meaning defined above
Dictionary Entries Near small intestine
Cite this Entry
“Small intestine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/small%20intestine. Accessed 19 Feb. 2025.
Kids Definition
small intestine
noun
: the long narrow part of the intestine between the stomach and the colon in which food is mostly digested, from which digested food is absorbed into the body, and which consists of the duodenum, jejunum, and ileum
Medical Definition
small intestine
noun
: the part of the intestine that lies between the stomach and colon, consists of duodenum, jejunum, and ileum, secretes digestive enzymes, and is the chief site of the absorption of digested nutrients
called also small bowel
More from Merriam-Webster on small intestine
Nglish: Translation of small intestine for Spanish Speakers
Britannica.com: Encyclopedia article about small intestine
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