plu·to·ni·an /pluˈtoniən/ (a.)Pluto的;陰間的
Plu·to·ni·an a. Plutonic.
Plu·to·ni·an n. Geol. A Plutonist. ◄ ►
Plutonian adj : of or relating to or characteristic of Hades or Tartarus [syn: Hadean, Tartarean]