Plutonian

Plutonian (comparative more Plutonian, superlative most Plutonian)

1. Of or relating to Pluto, Roman god of the underworld.
   • 1854, Edgar Allan Poe, The Raven, 2014, Bob Blaisdell (editor), The Dover Anthology of American Literature, Volume I: From the Origins through the Civil War, page 330,

     Ghastly grim and ancient raven wandering from the Nightly shore— / Tell me what thy lordly name is on the Night's Plutonian shore!"

2. Of, relating to, or having characteristics associated with the underworld; gloomy, dark; mournful.
   • 1950, Cuthbert Hamilton-Ellis, Four Main Lines‎, page 11:

     Yet when Brangwyn immortalised Cannon Street Station, most Plutonian of London terminals, they began to admire.

3. Of or relating to the dwarf planet Pluto.
   • 1959, Donald Allen Wollheim, The Secret of the Ninth Planet, 2015, unnumbered page,

     It had apparently simpler controls than most Plutonian products, for it easily blazed forth a bolt of electronic fire that blasted a tall, crystalline tree to shards.

   • 1985, Liz Greene, The Astrology of Fate‎, page 293:

     Another and perhaps more Plutonian view of this would be that David's bondage to his mother and the codes of behaviour which she set for him had extended throughout his life, in both profesional^[sic] and personal spheres; and that bondage now had an opportunity of loosening, with all the attendant consequences.

   • 2006, Jessica Murray, Soul-Sick Nation: An Astrologer's View of America‎, page 41:

     Factor in what we have learned about the second house and we get another meaning of waste, related but distinctly more Plutonian: debris that poses an elimination problem once its value has been used up.

4. (mineralogy) plutonic

Plutonian (plural Plutonians)

1. (science fiction) An inhabitant of the dwarf planet Pluto.
   • 1998, Story Descriptions: 1423: The Earthman's Burden, Astounding Stories, June 1931, Everett Franklin Bleiler, Richard Bleiler, Science-Fiction: The Gernsback Years, page 409,

     The Plutonians, who are almost extinct, once held a superscience that they have largely lost. Early Plutonian visits to Earth survived in folk memory as the devil, since Plutonians are gigantic, with horns, hooves, and tail.

2. (astrology) A person whose horoscope is dominated by Pluto.
   • 1986, Donna Cunningham, Healing Pluto Problems‎, page 28:

     What will be given is a composite picture, based on working with a great many Plutonians over the years.

     Plutonians who are negatively inclined are often very guarded and rigid, afraid to let others get close.

• Hadean
• Plutonic