plutonic

adjective

plu·​ton·​ic plü-ˈtä-nik 

1

: formed by solidification of magma deep within the earth and crystalline throughout

plutonic rock

2

often Plutonic : plutonian

Examples of plutonic in a Sentence

Recent Examples on the Web

The new simulations reproduce Venus-like patterns by placing the planet in an episodic or plutonic squishy-lid regime, where magmatism and mantle plumes periodically weaken the surface without generating true plates. —Samantha Mathewson, Space.com, 30 Nov. 2025

Gravestones can be made from plutonic rocks (after Pluto, the earlier name for Hades), like gabbro and granite; metamorphic rocks, like slate and marble; and sedimentary rocks, like sandstone and limestone. —David Bressan, Forbes, 31 Oct. 2024

Simon O’Neill unleashed a gleaming, live-steel tenor, and Franz-Josef Selig’s plutonic bass made for an imposing Hunding. —Globe Staff, BostonGlobe.com, 29 July 2019

Evolution of an upper crustal plutonic-volcanic plumbing system: Insights from high-precision U-Pb zircon geochronology of the intracaldera tuff and intrusions in Silver Creek caldera, Arizona, USA by T. Zhang and others. —Erik Klemetti, Discover Magazine, 11 Dec. 2010

Word History

Etymology

Latin Pluton-, Pluto

First Known Use

1596, in the meaning defined at sense 2

Rhymes for plutonic

• atonic
• benthonic
• bionic
• bosonic
• bubonic
• canonic
• carbonic
• cyclonic
• demonic
• dystonic
• hadronic
• harmonic