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plutonic |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: 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. 2. Of pertaining to or designating, the system of the Plutonists; igneous; as the Plutonic theory. {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}. From WordNet r 1.6 [wn]: plutonic adj : igneous rock that has solidified beneath the earth's surface; granite or diorite or gabbro [syn: {irruptive}, {eruptive}]
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