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plutonic

American  
[ploo-ton-ik] / pluˈtɒn ɪk /

adjective

Geology.
  1. noting or pertaining to a class of igneous rocks that have solidified far below the earth's surface.


plutonic British  
/ pluːˈtɒnɪk /

adjective

  1. Also: abyssal. (of igneous rocks) derived from magma that has cooled and solidified below the surface of the earth

"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

Etymology

Origin of plutonic

1790–1800; < Latin Plūtōn- (stem of Plūtō Pluto < Greek Ploútōn ) + -ic; originally referring to the Plutonic theory ( see plutonism)


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

To reconstruct this overlooked chapter of Earth's history, the researchers examined volcanic and plutonic rocks collected from multiple locations across northwestern Iran.

From Science Daily ● Oct. 28, 2026

However, Page Six reports that the duo’s relationship is plutonic and not romantic.

From Fox News ● Aug. 3, 2021

These are known as coarse-grained intrusive, or plutonic, igneous rocks.

From Textbooks ● Jan. 1, 2017

“We’re exactly like a man capable of sustaining a plutonic friendship with an attractive female co-worker — we’re entirely hypothetical.”

From New York Times ● Jul. 24, 2015

They were borne through an architecture of aqueous and plutonic agencies whose smallest fantasies would be belittled by comparisons with coliseums, labyrinths, cathedrals, pyramids, and stonehenges.

From Overland by J. W. (John William) De Forest

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