interstitial
adjective
in·ter·sti·tial
ˌin-tər-ˈsti-shəl 
1
: occurring in or being an interval or intervening space or segment : of, relating to, or forming an interstice
an interstitial space
… the site has been running interstitial ads, which consist of a full page of advertising between editorial pages, for a little more than a year.—
Carl Sullivan
Carl Sullivan2
a
: situated within but not restricted to or characteristic of a particular organ or tissue
—used especially of fibrous tissue
b
: affecting the interstitial tissues of an organ or part
interstitial cystitis
3
: being or relating to a crystalline compound in which usually small atoms or ions of a nonmetal occupy holes between the larger metal atoms or ions in the crystal lattice
Examples of interstitial in a Sentence
Recent Examples on the Web
Minimally invasive procedures, such as laser interstitial thermal therapy, also known as LITT, allow a far smaller hole to be made in the skull.
—Kristen Jordan Shamus, Detroit Free Press, 10 Dec. 2024
Rose Dasgupta, 34, regularly gets bladder instillations to treat interstitial cystitis, a chronic condition that causes bladder pain.
—Julia Ries, SELF, 4 Dec. 2024
In his view, interstitial lactate is ideal for monitoring intensity during training, and for pacing during competition.
—Alex Hutchinson, Outside Online, 25 Nov. 2024
Indirect revenue increased by 42.5% to $12.4 million, primarily from growth in interstitial advertising.
—Quartz Bot, Quartz, 8 Nov. 2024
See all Example Sentences for interstitial 
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Kristen Jordan Shamus, Detroit Free Press, 10 Dec. 2024
Rose Dasgupta, 34, regularly gets bladder instillations to treat interstitial cystitis, a chronic condition that causes bladder pain.
—Julia Ries, SELF, 4 Dec. 2024
In his view, interstitial lactate is ideal for monitoring intensity during training, and for pacing during competition.
—Alex Hutchinson, Outside Online, 25 Nov. 2024
Indirect revenue increased by 42.5% to $12.4 million, primarily from growth in interstitial advertising.
—Quartz Bot, Quartz, 8 Nov. 2024
See all Example Sentences for interstitial
Dictionary Entries Near interstitial
Cite this Entry
“Interstitial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/interstitial. Accessed 22 Dec. 2024.
Copy CitationKids Definition
interstitial
adjective
in·ter·sti·tial
ˌint-ər-ˈstish-əl
: relating to or located in the interstices
Medical Definition
interstitial
adjective
in·ter·sti·tial
ˌint-ər-ˈstish-əl
1
: situated within but not restricted to or characteristic of a particular organ or tissue
—used especially of fibrous tissue
2
: affecting the interstitial tissues of an organ or part
interstitial hepatitis
3
: occurring in the part of a fallopian tube in the wall of the uterus
interstitial pregnancy
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