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 revival requires Burnett to tour the cultural capitals, and to talk about the film and therefore his life in situ, as if life did not present its trials after.
—
Doreen St. Félix, New Yorker, 14 June 2025
Finally, Simonetti inlayed dark mother-of-pearl when the unit was in situ.
—Nicole Trilivas, Forbes.com, 26 May 2025
While some have argued for simply adding more landers and rovers, the analyses that can be done in laboratories on Earth will provide much more information than can be obtained on Mars with in situ assets that have, of necessity, extremely limited scientific instrumentation.
—Bruce Jakosky, Space.com, 14 May 2025
The test is intended as a next generation of diagnostics, enabling more accurate diagnosis than the current standard, fluorescence in situ hybridization, without requiring the painful intrusion of a bone marrow biopsy.
—Alex Knapp, Forbes.com, 30 Apr. 2025
See All Example Sentences for in situ
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Doreen St. Félix, New Yorker, 14 June 2025
Finally, Simonetti inlayed dark mother-of-pearl when the unit was in situ.
—Nicole Trilivas, Forbes.com, 26 May 2025
While some have argued for simply adding more landers and rovers, the analyses that can be done in laboratories on Earth will provide much more information than can be obtained on Mars with in situ assets that have, of necessity, extremely limited scientific instrumentation.
—Bruce Jakosky, Space.com, 14 May 2025
The test is intended as a next generation of diagnostics, enabling more accurate diagnosis than the current standard, fluorescence in situ hybridization, without requiring the painful intrusion of a bone marrow biopsy.
—Alex Knapp, Forbes.com, 30 Apr. 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 20 Jun. 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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