Reptigan

Reptigan is the name of the language spoken throughout the Reptigan Union, which see.

It is descended from the late form of Middle Adpihi spoken from Planetary Unification and the Return to Space until First Contact.

From First Contact through the growth of the Reptigan Union, Reptigan gradually developed to be one of the major ties holding the Union together.

It is now spoken by many different species native to many different planets and living on even more planets, and is also spoken by many Artificial Intelligences.

From a certain point of view one might consider Middle Adpihi to be Old Reptigan; but since Reptigan is spoken by non-Humans as well as Humans, and Middle Adpihi was primarily a Human language (at least originally), it is usually considered a different language.