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
The library is much bigger and brighter (sets by Todd Rosenthal, lights by Jen Schriever); the costumes (by Clint Ramos) telegraphic in their sociology and the bassoon-heavy interstitial music (by Rob Milburn and Michael Bodeen) almost cartoonishly apt.
—Jesse Green, New York Times, 17 Dec. 2024
Grace’s device detects lactate in sweat; that’s slightly different from continuous glucose monitors that sample the interstitial fluid found between cells.
—Alex Hutchinson, Outside Online, 25 Nov. 2024
Reitman and Kenan mimic this framing device in Saturday Night, down to their use of a clock in interstitial title cards.
—Hershal Pandya, Vulture, 8 Oct. 2024
Gayle Hendrix, a 79-year-old mother of two from Cape Girardeau, was diagnosed with lupus and interstitial lung disease four years ago and says her lung capacity continues to worsen.
—Landon Mion, Fox News, 23 Sep. 2024
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Jesse Green, New York Times, 17 Dec. 2024
Grace’s device detects lactate in sweat; that’s slightly different from continuous glucose monitors that sample the interstitial fluid found between cells.
—Alex Hutchinson, Outside Online, 25 Nov. 2024
Reitman and Kenan mimic this framing device in Saturday Night, down to their use of a clock in interstitial title cards.
—Hershal Pandya, Vulture, 8 Oct. 2024
Gayle Hendrix, a 79-year-old mother of two from Cape Girardeau, was diagnosed with lupus and interstitial lung disease four years ago and says her lung capacity continues to worsen.
—Landon Mion, Fox News, 23 Sep. 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 18 Jan. 2025.
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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