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 quarter-sized wearable device clips onto people's underwear and tracks their intestinal gas using electrochemical sensors. —Karissa Waddick, USA Today, 18 Feb. 2026

Reports at the time blamed different things for Simon’s premature passing, such as the cold climate, lingering effects of his wounds, and a mysterious intestinal inflammation. —Anne Ewbank, Popular Science, 18 Feb. 2026

For example, teams from Tufts University, in Massachusetts, and Purdue University, in Indiana, are working on devices with dissolvable coatings and mechanisms to collect samples of liquid for studies of the intestinal microbiome. —IEEE Spectrum, 18 Feb. 2026

One 2024 study also found that adequate water intake is critical for maintaining bacterial and immunological equilibrium in the gut, keeping up a solid defense against intestinal pathogens. —Katharine Gammon, Time, 10 Feb. 2026

Word History

First Known Use

15th century, in the meaning defined at sense 1

Phrases Containing intestinal

• intestinal fortitude

Rhymes for intestinal

• gastrointestinal

Kids 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

-ē

adverb

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

intestinally

-ē 

adverb