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

Boston Metal’s patented molten oxide electrolysis (MOE) solution takes the coal out of steelmaking, replacing the most carbon-intensive manufacturing steps (e.g., coking) with a process that produces molten ore with renewable electricity and generates no CO2 emissions. —Joe Mullich, TIME, 30 May 2024

Back at the metal workshop, the roaring sound of the kiln — which is used in the process of turning molten bronze and aluminum into objects — fills the quiet desert mesa with an ambient soundtrack. —Angella D’avignon, Los Angeles Times, 28 May 2024

The eruptions -- sometimes up to 30 feet high -- were atypical because explosive eruptions are typically driven by either rising molten rock -- magma -- or by expanding steam from magma heating underground water. —Julia Jacobo, ABC News, 27 May 2024

The lack of evaporation from the molten pool allows the glass to cool in a stress-free state, leaving a very strong weld. —IEEE Spectrum, 9 May 2024

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