Lithon language

Modern Lithon (Lithon: ΛNΔN, Vulgar: ) is a language spoken on the exoplanet Lithos by the Lithon species. It has over 112 billion speakers across dozens of planets, and emerged from Ancient Lithon about 20 thousand years ago.

Its common though officially denounced variety, Vulgar Lithon (which is actually as many as 20 varieties), is responsible for some otherwise unexplained ancient borrowings in the Ancient Greek language.

Classification
Lithon is a member of the very large, very ancient family of Lenidian languages, of which it is the only surviving member.