- noting or pertaining to a class of igneous rocks that have solidified far below the earth's surface.
Origin of plutonic
Examples from the Web for plutonic
As to flint, that would not be wanting in these regions of Plutonic origin.The Mysterious Island
He has neither the cunning nor the ambition to establish the Plutonic empire with it.The Perfect Wagnerite
George Bernard Shaw
In the Plutonic system, there is one simple and constant order assumed, which may be supposed eternal.The Life of Sir Humphrey Davy, Bart. LL.D., Volume 2 (of 2)
John Ayrton Paris
The plutonic rocks which penetrate them are generally granite of various degrees of firmness.
They loved their city and worked for it with a plutonic energy which was always ardently vocal.The Magnificent Ambersons
- (of igneous rocks) derived from magma that has cooled and solidified below the surface of the earthAlso: abyssal
Word Origin and History for plutonic
"pertaining to or involving intense heat deep in the earth's crust," 1796, coined by Irish scientist Richard Kirwin (1733-1812) from comb. form of Pluto (as god of the underworld) + -ic. Especially in reference to early 19c. geological theory (championed by Hutton) that attributed most of the earth's features to action of internal heat, a theory which triumphed over its rival, neptunism, which attributed them to water. Related: Plutonism; Plutonist.