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

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