'Plutonic' definitions:
Definition of 'plutonic'
From: WordNet
adjective
Of igneous rock that has solidified beneath the earth's surface; granite or diorite or gabbro [syn: irruptive, plutonic]
Definition of 'Plutonic'
From: GCIDE
- Plutonic \Plu*ton"ic\, a. [Cf. F. plutonique. See Pluto.]
- 1. Of or pertaining to Pluto; Plutonian; hence, pertaining to the interior of the earth; subterranean. [1913 Webster]
- 2. Of, pertaining to, or designating, the system of the Plutonists; igneous; as, the Plutonic theory. [1913 Webster]
- Plutonic action (Geol.), the influence of volcanic heat and other subterranean forces under pressure.
- Plutonic rocks (Geol.), granite, porphyry, and some other igneous rocks, supposed to have consolidated from a melted state at a great depth from the surface. Cf. {Intrusive rocks}, under Intrusive.
- Plutonic theory. (Geol.) See Plutonism. [1913 Webster]