Definition of in situ in English:

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in situ

Pronunciation: /ˌin ˈsīto͞o/
Pronunciation: /ˌin ˈsēto͞o/

adverb& adjective

1In its original place: [as adverb]: mosaics and frescoes have been left in situ [as adjective]: a collection of in situ pumping engines
More example sentences
  • The archaeologists were able to date the vase because it was found in situ.
  • Her mission is preserving populations of native rock grape plants in situ, on site in their native habitat, as part of an ecological preserve.
1.1In position: [as adverb]: her guests were all in situ
More example sentences
  • These facilities are now in situ with a planned operational date in October.


Mid 18th century: Latin.

For editors and proofreaders

Syllabification: in si·tu

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