plu·​ton | \ ˈplü-ˌtän How to pronounce pluton (audio) \

Definition of pluton

: a typically large body of intrusive igneous rock

Examples of pluton in a Sentence

Recent Examples on the Web In Nevada, for instance, geologists find fibers associated with jagged landscape formed by plutons, which are huge rock formations caused by liquid magma forced upward into the cooler crust and then solidifying. Deborah Blum, WIRED, "An Asbestos Map of the United States," 17 Jan. 2014

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pluton.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of pluton

1934, in the meaning defined above

History and Etymology for pluton

probably back-formation from plutonic

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The first known use of pluton was in 1934

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Cite this Entry

“Pluton.” Dictionary, Merriam-Webster, Accessed 4 Jul. 2020.

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Rhyming Dictionary: Words that rhyme with pluton Encyclopedia article about pluton

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