noun Geology.
any body of igneous rock that solidified far below the earth's surface.

1935–40; < German Pluton, back formation from plutonisch plutonic Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To pluton
World English Dictionary
pluton (ˈpluːtɒn)
any mass of igneous rock that has solidified below the surface of the earth
[C20: back formation from plutonic]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Science Dictionary
pluton   (pl'tŏn')  Pronunciation Key 
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences
Only the northern half of this pluton is located in the quadrangle.
Some rock of this pluton was quarried for building stone.
Related Words
Images for pluton
Copyright © 2014, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature