interstitial

adjective

in·​ter·​sti·​tial ˌin-tər-ˈsti-shəl How to pronounce interstitial (audio)
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
2
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
interstitially adverb

Examples of interstitial in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Symptoms of interstitial cystitis include pelvic and bladder pain and feeling the need to urinate frequently.62 Research shows dimethyl sulfoxide can improve irritation of the bladder wall, which helps with pain and how much fluid the bladder can comfortably hold. Kirstyn Hill, Pharmd, Mph, Health, 22 Sep. 2024 So emphatic are the images that the interstitial dialogue cards are hardly necessary. Declan Gallagher, EW.com, 7 Sep. 2024 Its casual exposition dumps and jarring time shifts would be nearly unmanageable without the helpful interstitial cards peppered throughout the movie, but the prismatic imagery in the scenes between those cards makes up for it. Eric Vilas-Boas, Vulture, 1 Apr. 2024 Elsewhere, Teddy Swims and Jessie Murph provided interstitial performances of their respective hits on the way to commercials. Steven J. Horowitz, Variety, 11 Sep. 2024 See all Example Sentences for interstitial 

Word History

First Known Use

1646, in the meaning defined at sense 1

Time Traveler
The first known use of interstitial was in 1646

Dictionary Entries Near interstitial

Cite this Entry

“Interstitial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/interstitial. Accessed 22 Nov. 2024.

Kids Definition

interstitial

adjective
in·​ter·​sti·​tial ˌint-ər-ˈstish-əl How to pronounce interstitial (audio)
: relating to or located in the interstices
interstitially adverb

Medical Definition

interstitial

adjective
in·​ter·​sti·​tial ˌint-ər-ˈstish-əl How to pronounce interstitial (audio)
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
interstitially adverb

More from Merriam-Webster on interstitial

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