molten

adjective

mol·​ten ˈmōl-tᵊn 

1

: fused or liquefied by heat : melted

molten lava

2

: having warmth or brilliance : glowing

the molten sunlight of warm skies

—T. B. Costain

3

obsolete : made by melting and casting

Examples of molten in a Sentence

Recent Examples on the Web

This complex is highly mobile in the molten sections of the mantle. —David Bressan, Forbes.com, 23 May 2025

For instance, a 2022 analysis suggested that in the first billion years, when the Moon was covered in molten rock, giant rocks formed as the magma cooled and solidified. —Jennifer Ouellette, ArsTechnica, 23 May 2025

Lean harder on the accelerator, Just a little further, just a little Faster, through the hellgate to the highway, With all its molten rubber and melting Asphalt sinking sharp and gumming the lungs. —Rowan Ricardo Phillips, New Yorker, 19 May 2025

Imagine a slow-motion bubble of molten rock pressing upward beneath the surface, warping and cracking the crust above. —Victoria Corless, Space.com, 19 May 2025

Word History

Etymology

Middle English, from past participle of melten to melt

First Known Use

14th century, in the meaning defined at sense 3

Kids Definition

molten

adjective

mol·​ten ˈmōlt-ᵊn 

: melted especially by very great heat