Ploutonian

== English == === Etymology === From Ancient Greek Πλουτώνιος (Ploutṓnios) +‎ -an. By surface analysis, Plouton +‎ -ian. === Adjective === Ploutonian (comparative more Ploutonian, superlative most Ploutonian) Rare form of Plutonian (“of or relating to Pluto, the Greek and Roman god of the underworld”).