From Pluralpedia, the collaborative plurality dictionary
apeirogenic (n., adj.)
Applies tosystems, headmates
Coiner NeonWebb/WitchyRose

Apeirogenic refers to a headmate, sisasystem, or other that has an infinite number of origins. This is similar to pangenic, where they will have all origins (within their own experiences), but in this case they also have origins beyond understanding that haven’t been discovered yet.

It’s different from pangenic because it goes beyond just having all origins.