plutonism
American
[ploot-n-iz-uhm]
/ ˈplut nˌɪz əm /
noun
Geology.
-
the intrusion of magma and associated deep-seated processes within the earth's crust.
-
(often initial capital letter) the disproven theory that all rocks formed by solidification of a molten mass, promulgated by Scottish geologist James Hutton (1726–97).
Other Word Forms
Etymology
Origin of plutonism
First recorded in 1840–50; pluton(ic) + -ism
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
