molten

adjective

mol·​ten ˈmōl-tᵊn How to pronounce molten (audio)
Synonyms of molten
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
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.
If power stops, natural convection continues to move the molten salt through the internal circuits. — Aman Tripathi, Interesting Engineering, 29 Aug. 2026 The illusion of molten steel was basically water and mineral oil mixed with a little powdered sugar; creative lighting and heaters placed below the cameras—plus a few CGI sparks in the background—did the rest. — ArsTechnica, 28 Aug. 2026 Johannes said, adding that the greatest difficulty in creating the bell is the risk that molten metal pressure will destroy the mold. — Philipp Jenne, Fortune, 30 July 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

Browse Nearby Words

molt
molten
Molteno disease
See all Nearby Words

Cite this Entry

“Molten.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/molten. Accessed 1 Sep. 2026.

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Kids Definition

molten

adjective
mol·​ten ˈmōlt-ᵊn How to pronounce molten (audio)
: melted especially by very great heat

More from Merriam-Webster on molten

Thesaurus: All synonyms and antonyms for molten

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