- any body of igneous rock that solidified far below the earth's surface.
Origin of pluton
1935–40; < German Pluton, back formation from plutonisch plutonic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for pluton
The names of the torpedo-boat destroyers were the Furor and the Pluton.Young Peoples' History of the War with Spain
One of our huge shells fell midway of the Pluton, which at once went down with an awful plunge.The Story of American History
Albert F. Blaisdell
The Furor and Pluton tried to fire back, but their men could not stand that iron rain.Stories of Our Naval Heroes
Wainwright pursued the other torpedo boat, the Pluton, more vigorously.
While these fled, disaster fell upon the two torpedo-boat destroyers, Pluton and Furor.
- any mass of igneous rock that has solidified below the surface of the earth
C20: back formation from plutonic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- A large body of igneous rock formed when a plume of magma cools and solidifies underground. Although most plutons are deep within the Earth's crust, some become exposed at the surface due to plate-tectonic processes.
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