Definition of in situ in English:

in situ

adverb & adjective

  • 1In the original place.

    as adverb ‘frescoes have been left in situ’
    as adjective ‘a collection of in situ pumping engines’
    • ‘Her mission is preserving populations of native rock grape plants in situ, on site in their native habitat, as part of an ecological preserve.’
    • ‘The archaeologists were able to date the vase because it was found in situ.’
    in position, in situ
    View synonyms
    1. 1.1 In the appropriate position.
      as adverb ‘her guests were all in situ’
      • ‘These facilities are now in situ with a planned operational date in October.’

Origin

Latin.

Pronunciation

in situ

/ɪn ˈsɪtjuː/