Plutoninen
Plutoninen is a term that generally refers to something originating from or relating to Pluto, the dwarf planet. In astronomical contexts, it can be used to describe objects, regions, or phenomena associated with Pluto. For instance, it might be used in discussions about the composition of Pluto's surface, the geology of its interior, or the atmospheric processes occurring on the dwarf planet.
The term can also appear in discussions about Kuiper Belt Objects, of which Pluto is a prominent