intestinal
adjective
in·tes·ti·nal
in-ˈte-stə-nᵊl 
-ˈtes(t)-nəl,
-ˈte-sᵊn-əl,
British often ˌin-(ˌ)te-ˈstī-nᵊl
1
: affecting, occurring, or living in the intestine
2
: of, relating to, or being the intestine
intestinally
adverb
Examples of intestinal in a Sentence
Recent Examples on the Web
The team then tracked how each amino acid affected intestinal stem cell regeneration.
—
Deirdre Bardolf, FOXNews.com, 16 Oct. 2025
Then, building a synthetic gut microbiome made up of 78 species of bacteria that had been co-cultured with human cells modeling the intestinal lining of the gut, the researchers found that 35% of the phage species became active when our gut cells were present.
—New Atlas, 16 Oct. 2025
Certain probiotics also stimulate intestinal muscles to contract more effectively, which can move stool in your colon.
—Julie Marks, Verywell Health, 10 Oct. 2025
Interestingly, the rock shelter even preserved the man’s mummified intestinal tissue and feces.
—Mrigakshi Dixit, Interesting Engineering, 9 Oct. 2025
See All Example Sentences for intestinal
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Deirdre Bardolf, FOXNews.com, 16 Oct. 2025
Then, building a synthetic gut microbiome made up of 78 species of bacteria that had been co-cultured with human cells modeling the intestinal lining of the gut, the researchers found that 35% of the phage species became active when our gut cells were present.
—New Atlas, 16 Oct. 2025
Certain probiotics also stimulate intestinal muscles to contract more effectively, which can move stool in your colon.
—Julie Marks, Verywell Health, 10 Oct. 2025
Interestingly, the rock shelter even preserved the man’s mummified intestinal tissue and feces.
—Mrigakshi Dixit, Interesting Engineering, 9 Oct. 2025
See All Example Sentences for intestinal
Cite this Entry
“Intestinal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/intestinal. Accessed 25 Oct. 2025.
Copy CitationKids Definition
intestinal
adjective
in·tes·ti·nal
in-ˈtes-tən-ᵊl
1
: of or relating to the intestine
2
: affecting or occurring in the intestine
intestinally
adverb
-ē
Medical Definition
intestinal
adjective
in·tes·ti·nal
in-ˈtes-tən-ᵊl, -ˈtes(t)-nəl, -ˈtes-ᵊn-əl, British often ˌin-(ˌ)tes-ˈtīn-ᵊl
1
a
: affecting or occurring in the intestine
intestinal digestion
intestinal catarrh
b
: living in the intestine
the intestinal flora
an intestinal worm
2
: of, relating to, or being the intestine
the intestinal canal
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