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

But Novarupta’s act of magma theft provided the first hint that molten rock might be nimbler than scientists realized. —Quanta Magazine, 27 Mar. 2026

Earth's magnetic dynamo is situated in our planet's outer core, where the convection of molten iron generates electrical currents. —Keith Cooper, Space.com, 26 Mar. 2026

Multitracked saxophones swarm over a pit of molten bass frequencies, slipping between sentimental consonance—you might momentarily be reminded of Vangelis’ Blade Runner score—and eerie discord. —Philip Sherburne, Pitchfork, 25 Mar. 2026

The inscription would have sent enemies quite an impression as it was burned into the stone with molten lead, as if daring the attackers to continue their useless advance, Live Science continues. —Maria Mocerino, Interesting Engineering, 21 Mar. 2026

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