(ˈ)plü|tānik, -nēk adjective
Etymology: Latin Pluton-, Pluto Pluto (from Greek Ploutōn ) + English -ic
1.
a. : relating to or being the theory of the plutonists : igneous
b. : originating or situated deep within the earth
2. sometimes capitalized : of or relating to the Greek god Pluto : plutonian 1