Plutonian

[ ploo-toh-nee-uh n ]
/ pluˈtoʊ ni ən /

adjective

Also Plu·ton·ic [ploo-ton-ik] /pluˈtɒn ɪk/. of, relating to, or resembling Pluto or the lower world; infernal.

Origin of Plutonian

1660–70; < Latin Plūtōni(us) (< Greek Ploutṓnios, derivative of Ploútōn Pluto) + -an
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British Dictionary definitions for plutonian

Plutonian

/ (pluːˈtəʊnɪən) /

adjective

of or relating to Pluto (the god) or the underworld; infernal
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012