plutean
/ˈpluːtiːən/Definitions
1. adjective
relating to or characteristic of Pluto, the dwarf planet in the outer reaches of the solar system
“The astronomers were particularly interested in the plutean moons because they were relatively unexplored.”
2. noun
a person who is a citizen or subject of the city of Plutarch in ancient Greece
“The historian noted that the pluteans were known for their unique governance structure.”