A surname.

Alternative spelling of in situ

Only used in in situ. / (rare) Only used in ex situ. / (very informal) Short for situation.

in its original position or place

in its original position or place

plural of Situ

The position, especially the usual, normal position, of a body part or part of a plant. / The method in which the parts of a plant are arranged.

(psychology) Occurring in relation to a specific situation. / (grammar) Expressing the location of things in comparison with one another, e.g. the word "to" in the phrase face to face.

(rare) Outside its original position or place.

(medicine) A congenital disease in which the major visceral organs are distributed abnormally in the chest and abdomen cavities.