plutonic
/pluːˈtɑnɪk/
adjective
- Relating to igneous rock formed from magma deep within the Earth.
- The mountain range is made of ancient plutonic formations that cooled slowly underground.
- Geologists distinguish plutonic from volcanic rocks by their crystal size.
- Plutonic rocks like granite are often hard and coarse-grained.
- Relating to the underworld or the god Pluto; dark, deep, or infernal (less common, literary).
- The cave's plutonic silence was broken only by dripping water.
- In the story, the hero descended into a plutonic abyss to face the spirits.
- The poet described a plutonic realm of eternal night beneath the earth.