Hypertext Webster Gateway: "Plutonism"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Plutonism \Plu"to*nism\, n. [Cf. F. plutonisme.]
The theory, early advanced in geology, that the successive
rocks of the earth"s crust were formed by igneous fusion; --
opposed to the Neptunian theory.
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