Plutonian

Full definition of Plutonian

Adjective

1. Of or relating to Pluto, Roman god of the underworld, or the underworld itself''Ghastly grim and ancient raven wandering from the Nightly shore - Tell me what thy lordly name is on the Night's Plutonian shore!" The Raven by Edgar Allan Poe (1854)
2. Of, or relating to Pluto (the dwarf planet)

Noun

1. (science fiction) An inhabitant of the dwarf planet Pluto.