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 team has also been photographing the vessels’ remains in situ and studying the site using ground-penetrating radar, a non-invasive technology used to examine historic sites without causing damage.
—
Julia Binswanger, Smithsonian Magazine, 4 June 2024
Using a microscopy technique called fluorescence in situ hybridization, Lawrence and her colleagues showed that this RNA wraps itself around one X chromosome (selected at random in each cell) to induce persistent changes that silence the genes.
—Philip Ball, Scientific American, 14 May 2024
Ductal carcinoma in situ is a non-invasive, stage zero cancer trapped inside the milk ducts.
—Vanessa Etienne, Peoplemag, 16 May 2024
The bridges over the Rhone are unusually low, so the top floor of the building had to be constructed in situ.
—Kyle Chayka, The New Yorker, 25 Mar. 2024
Storm, a longtime ESPN anchor, revealed her private battle with cancer Tuesday, sharing that she was diagnosed with ductal carcinoma in situ.
—Alexandra Del Rosario, Los Angeles Times, 19 Mar. 2024
During a Tuesday appearance on Good Morning America, the ESPN sportscaster, 61, revealed that she was diagnosed with a non-invasive, stage zero breast cancer called ductal carcinoma in situ, (DCIS) in January.
—Shania Russell, EW.com, 19 Mar. 2024
The sports journalist was diagnosed with a non-invasive, stage zero breast cancer called ductal carcinoma in situ, (DCIS), where the cells that line the milk ducts of the breast have become cancer, but have not spread into surrounding breast tissue.
—Vanessa Etienne, Peoplemag, 19 Mar. 2024
Harvard's Conroy was part of a team that measured the in situ stars' chemistry and found two populations: one group was ancient, metal-poor, moving chaotically and forming stars slowly; the other was younger, metal-rich, moving coherently and forming stars 10 times faster.
—Ann Finkbeiner, Scientific American, 16 Jan. 2024
Julia Binswanger, Smithsonian Magazine, 4 June 2024
Using a microscopy technique called fluorescence in situ hybridization, Lawrence and her colleagues showed that this RNA wraps itself around one X chromosome (selected at random in each cell) to induce persistent changes that silence the genes.
—Philip Ball, Scientific American, 14 May 2024
Ductal carcinoma in situ is a non-invasive, stage zero cancer trapped inside the milk ducts.
—Vanessa Etienne, Peoplemag, 16 May 2024
The bridges over the Rhone are unusually low, so the top floor of the building had to be constructed in situ.
—Kyle Chayka, The New Yorker, 25 Mar. 2024
Storm, a longtime ESPN anchor, revealed her private battle with cancer Tuesday, sharing that she was diagnosed with ductal carcinoma in situ.
—Alexandra Del Rosario, Los Angeles Times, 19 Mar. 2024
During a Tuesday appearance on Good Morning America, the ESPN sportscaster, 61, revealed that she was diagnosed with a non-invasive, stage zero breast cancer called ductal carcinoma in situ, (DCIS) in January.
—Shania Russell, EW.com, 19 Mar. 2024
The sports journalist was diagnosed with a non-invasive, stage zero breast cancer called ductal carcinoma in situ, (DCIS), where the cells that line the milk ducts of the breast have become cancer, but have not spread into surrounding breast tissue.
—Vanessa Etienne, Peoplemag, 19 Mar. 2024
Harvard's Conroy was part of a team that measured the in situ stars' chemistry and found two populations: one group was ancient, metal-poor, moving chaotically and forming stars slowly; the other was younger, metal-rich, moving coherently and forming stars 10 times faster.
—Ann Finkbeiner, Scientific American, 16 Jan. 2024
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'in situ.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“In situ.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/in%20situ. Accessed 17 Jun. 2024.
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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