Plutonic :: Plutonic (a.) Of or pertaining to Pluto; Plutonian; hence, pertaining to the interior of the earth; subterranean..
Plutonic :: Plutonic (a.) Of, pertaining to, or designating, the system of the Plutonists; igneous; as, the Plutonic theory..
Plutonism :: Plutonism (n.) The theory, early advanced in geology, that the successive rocks of the earth's crust were formed by igneous fusion; -- opposed to the Neptunian theory..
Plutonist :: Plutonist (n.) One who adopts the geological theory of igneous fusion; a Plutonian. See Plutonism.