in situ

adverb or adjective
in si·​tu | \ (ˌ)in-ˈsī-(ˌ)tü How to pronounce in situ (audio) , -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

Recent Examples on the Web Both the San Diego Botanic Garden and the Water Conservation Garden in El Cajon have targeted low-water landscaping in their gardens and have plants in situ for visitors to see and decide for themselves what fits their yard’s color palate. Michael Harrelson, San Diego Union-Tribune, 8 Jan. 2022 But much of the care, such as taking blood samples, can be done in situ with the help of the husbandry staff. Jennifer Ouellette, Ars Technica, 14 Dec. 2021 Today, the Euclid Beach gateway arch at Lake Shore Boulevard and East 159th Street is all that remains of the amusement park in situ, although its restored carousel is on view at the Western Reserve Historical Society in University Circle. Steven Litt, cleveland, 5 Dec. 2021 February 24, 2010 - Is diagnosed with a non-invasive breast cancer, ductal carcinoma in situ (DCIS). CNN, 5 Oct. 2021 For cameras mounted high up somewhere that’s inaccessible, there’s a solar panel option that can recharge the camera’s battery in situ. Mark Sparrow, Forbes, 12 Dec. 2021 Notable natural wines from wineries like Klinec and Čotar can be found on plenty of wine lists throughout the country, and they can also be enjoyed in situ with a visit to the picturesque wineries. Nicole Trilivas, Forbes, 12 Nov. 2021 Margiela appropriated his own tropes and those of others: a trompe l’oeil mural in situ; readymade magazine stacks; a bus shelter covered in fur à la Meret Oppenheim. Amy Verner, Vogue, 28 Oct. 2021 Melted and recrystallized granite clasts suggest the rock was quickly heated to over 1,200 degrees and subsequently cooled in situ, consistent with an impact. David Bressan, Forbes, 12 Oct. 2021

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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The first known use of in situ was in 1740

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Last Updated

16 Jan 2022

Cite this Entry

“In situ.” Dictionary, Merriam-Webster, Accessed 21 Jan. 2022.

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More Definitions for in situ

in situ

adverb or adjective
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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