You searched for: “in situ”
in situ
1. In its natural or original place.
2. In the original position
This entry is located in the following unit: Geology or Related Geological Terms + (page 6)
in situ (adjective) (not comparable)
Referring to something in its original place or position: An artifact in a site is in situ when it is found by the archeologist in its original location.

This entry is located in the following unit: Archeology, Archaeology (page 4)