in si·​tu | \(ˌ)in-ˈsī-(ˌ)tü, -ˈsi-, -(ˌ)tyü also -ˈsē-, -(ˌ)chü\

Definition of in situ 

: in the natural or original position or place an in situ cancer confined to the breast duct

Examples of in situ in a Sentence

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Of course, there is an inherent challenge of capturing the in situ acoustics in the first place, since getting audio equipment in and out of caves can be difficult. Jennifer Ouellette, Ars Technica, "Cave acoustics can help sculpt more realistic sounds in digital space," 14 Nov. 2018 Most of the best is made here: take a tour of the Montelobos distillery to sample it in situ, or try it at one of the new local bars. Mark Ellwood, Condé Nast Traveler, "Best Places to Visit in November," 20 Sep. 2018 Still in situ and able to locally -- help locally as discussed, along with your bureau colleagues. Fox News, "Kellyanne Conway talks race relations in America; Sens. Graham and Reed on Space Force and sanctions," 12 Aug. 2018 In addition to gathering surface soil samples, Hayabusa2 will release a German-French rover called MASCOT that will hop across the surface, using its four instruments to analyze soil samples in situ. Dennis Normile, Science | AAAS, "Japan’s new asteroid probe reaches its target after 3.2-billion-kilometer journey," 27 June 2018 The four artists who make up the collective, Wolfgang Gantner, Ali Janka, Florian Reither and Tobias Urban, spent two weeks building up the sculptures in situ in the large contemporary galleries at the Boijmans before the opening on May 19. Nina Siegal, New York Times, "In This Exhibition, You Walk Through Excrement," 7 June 2018 Alas, nothing remains in situ of Fersen’s furnishings and objets d’art, although historic photographs blown up large and displayed in the vaulted drawing room give a sense of its crowded fin de siècle glamour. Hamish Bowles, Vogue, "Exploring Villa Lysis, an Aesthete’s Retreat in Capri," 28 June 2018 Seeing the pieces in situ also ignites imagination. Laura Mauk-caines, SFChronicle.com, "SF boutique Future Perfect is also its founder’s apartment," 15 June 2018 Lasik — short for laser-assisted in situ keratomileusis — eliminates the need for glasses by reshaping the cornea, the clear round dome that covers the front of the eye. Author: Roni Caryn Rabin, Anchorage Daily News, "Blurred vision, burning eyes: This is a Lasik success?," 12 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'in situ.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of in situ

1740, in the meaning defined above

History and Etymology for in situ

Latin, in position

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Last Updated

10 Dec 2018

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The first known use of in situ was in 1740

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More Definitions for in situ

in si·​tu | \(ˈ)in-ˈsī-(ˌ)t(y)ü, -ˈsi- also -ˈsē-, -(ˌ)chü\

Medical Definition of in situ 

: in the natural or original position or place an in situ cancer confined to the breast duct — see carcinoma in situ

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