| ̷ ̷ ̷ ̷|räkthənəs adjective
Etymology: heter- + -chthonous (as in autochthonous )
1. : not indigenous : foreign , naturalized
a heterochthonous flora
2.
a. : not formed in the place where it now occurs : transported
heterochthonous rock
b. : removed from the original deposit (as by erosion) and reembedded (as certain fossils)