plutonic
Concise Oxford English Dictionary © 2008 Oxford University Press:
plutonic/pluːˈtɒnɪk/
▶adjective
- 1 Geology relating to or denoting igneous rock formed by solidification at considerable depth beneath the earth's surface.
- 2 (Plutonic) relating to the underworld or the Greek god Pluto.
– derivatives
plutonism noun (Geology).
plutonism noun (Geology).
'plutonic' also found in these Oxford entries:

