Definition of pluton
:a typically large body of intrusive igneous rock
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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.
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Origin and Etymology of pluton
probably back-formation from plutonic
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See words that rhyme with pluton Britannica.com: Encyclopedia article about pluton
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