Definition of pluton
: a typically large body of intrusive igneous rock
Recent Examples of pluton from 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.
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Origin and Etymology of pluton
probably back-formation from plutonic
First Known Use: 1934See Words from the same year
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