Definition

Relating to rocks that are formed from magma that cools and solidifies deep beneath the Earth's surface.

Example

Plutonic rocks, such as granite, are formed from magma that cools slowly underground.

Conversation

Have you ever heard of plutonic rocks?

Yeah, I think they form from magma deep inside the Earth, right?

Exactly! They're really interesting because they're so different from surface rocks.

I love how geology has so many layers, just like those plutonic formations.

Synonyms & Antonyms

Root Explanation

Plutonic → It is derived from 'Pluto' (from Latin *Pluto*, meaning the god of the underworld) and the suffix '-ic' (meaning pertaining to). The term 'plutonic' refers to rocks formed from magma deep within the earth, relating to the underworld or depths.

Memory Tip

Think of 'Pluto', the god of the underworld, to remember that 'plutonic' relates to things formed deep within the earth.

Visually Confused Words