plutonic

Alternative letter-case form of Plutonic.

Containing plutonium in a higher oxidation state.

Synonym of Plutonian (“of or relating to Pluto, the Greek and Roman god of the underworld; demonic, infernal”).

Synonym of Plutonian (“of, relating to, or having characteristics associated with the underworld; dark, gloomy; mournful”).

a dark, handsome lady, of no little majesty, and rather like a plutonic Madonna

Of or pertaining to rocks formed deep in the Earth's crust, rather than by volcanoes at the surface of the Earth.

These cliffs, I may remark, are basaltic, and therefore plutonic.

Of, pertaining to, or supporting plutonism (“the theory that the rocks of the Earth were formed in fire by volcanic activity, with a continuing gradual process of weathering and erosion, then deposited on the sea bed, re-formed into layers