- [p-]Geol. formed at great depth by intense heat and pressure: said of rock, esp. intrusive igneous rock, that is typically coarsegrained and granitelike
Origin of Plutonicfrom Classical Latin Pluto (gen. Plutonis) + -ic
Of deep igneous or magmatic origin: plutonic rocks.
Origin of plutonicFrom Latin Plūtō Plūtōn- Pluto ; see Pluto .
From French plutonique (“of or pertaining to Pluto, the underworld, interior of the earth")