molten

adjective

mol·ten ˈmōl-tᵊn

Synonyms of molten

: fused or liquefied by heat : melted

molten lava

: having warmth or brilliance : glowing

… the molten sunlight of warm skies …—T. B. Costain

obsolete : made by melting and casting

Examples of molten in a Sentence

Recent Examples on the Web

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Tiny droplets of the molten tin are fired out of a cannon into a vacuum chamber, where they are shot—sixty thousand times a second—by unerring lasers. — Gideon Lewis-Kraus, New Yorker, 19 Oct. 2026 Each color change requires it to unload one filament, load another and purge the remaining molten plastic. — New Atlas, 17 Oct. 2026 Increasing demand for molten salt reactors Molten salt reactors run at near-atmospheric pressure and rely on passive safety mechanisms if power fails. — Aman Tripathi, Interesting Engineering, 17 Oct. 2026 In October 2025, technicians used mechanical arms to analyze samples of the reactor’s molten-salt fuel. — Glenn Zorpette, IEEE Spectrum, 15 Oct. 2026 See All Example Sentences for molten

Word History

Etymology

Middle English, from past participle of melten to melt

First Known Use

14th century, in the meaning defined at sense 3

Time Traveler

The first known use of molten was in the 14th century

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Browse Nearby Words

molt

molten

Molteno disease

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Cite this Entry

Style

“Molten.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/molten. Accessed 28 Oct. 2026.

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Kids Definition

molten

adjective

mol·ten ˈmōlt-ᵊn

: melted especially by very great heat

molten

adjective

Examples of molten in a Sentence

Word History

Browse Nearby Words

Cite this Entry

Kids Definition

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