in situ
adverb or adjective
in si·tu
(ˌ)in-ˈsī-(ˌ)tü 
-ˈsi-,
-(ˌ)tyü
also -ˈsē-,
-(ˌ)chü
: in the natural or original position or place
an in situ cancer confined to the breast duct
Examples of in situ in a Sentence
Recent Examples on the Web
The coating was built using in situ reconstruction.
—
Neetika Walter, Interesting Engineering, 30 Aug. 2025
Kitchens, great halls, bedchambers, and storerooms are all recreated in situ, each meticulously curated to provide context and meaning.
—Lee Sharrock, Forbes.com, 19 Aug. 2025
The nine-time Grammy-winner was diagnosed with ductal carcinoma in situ (DCIS), according to the National Breast Cancer Foundation.
—Audrey Gibbs, The Tennessean, 15 Aug. 2025
But only pieces likely to interest visitors are likely to remain in situ.
—Antonia Mortensen, CNN Money, 23 July 2025
See All Example Sentences for in situ
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Neetika Walter, Interesting Engineering, 30 Aug. 2025
Kitchens, great halls, bedchambers, and storerooms are all recreated in situ, each meticulously curated to provide context and meaning.
—Lee Sharrock, Forbes.com, 19 Aug. 2025
The nine-time Grammy-winner was diagnosed with ductal carcinoma in situ (DCIS), according to the National Breast Cancer Foundation.
—Audrey Gibbs, The Tennessean, 15 Aug. 2025
But only pieces likely to interest visitors are likely to remain in situ.
—Antonia Mortensen, CNN Money, 23 July 2025
See All Example Sentences for in situ
Cite this Entry
“In situ.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/in%20situ. Accessed 5 Sep. 2025.
Copy CitationKids Definition
in situ
adverb or adjective
in si·tu
(ˈ)in-ˈsī-t(y)ü
-ˈsi-
: in the natural or original position
the cancer cells remained in situ
Etymology
Latin, "in position"
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