plutonian

/pluːˈtoʊniən/
adjective
  1. Relating to the dwarf planet Pluto or the underworld (in mythology); dark, distant, or infernal.
    • The Plutonian landscape is covered in ice and frozen nitrogen.
    • In the poem, the hero journeys through a Plutonian realm of shadows and silence.
    • The deep cave had a Plutonian darkness that felt ancient and oppressive.
Synonyms
What does "plutonian" mean? | whatsthatwordmean | whatsthatwordmean