plutonic
1. [ adjective ] (geology) igneous rock that has solidified beneath the earth's surface; granite or diorite or gabbro
Synonyms: eruptive irruptive
Related terms: intrusive
Similar spelling:   Platonic
  pluton
  Platonistic
  plutonium
  Plutonian
  platoon
  Platonist
  Platonism
  platen
  platan
  Plotner
  Platner
  plating
  Platanaceae
  plotinus
  Plattner
  platinum
  Platanus