What does "autochthony" mean?

An aboriginal condition or state.

What is a synonym for "autochthony"?

Common synonyms include: endemism, indigenousness.

Pronounced //ɔːˈtɒkθəni//.

/ɔːˈtɒkθəni/ noun

noun ·Rare ·Advanced level

Noun

1
An aboriginal condition or state. countable, uncountable
2
nativeness by virtue of originating or occurring naturally (as in a particular place) wordnet

From autochthon + -y, calque of German Autochthonie.