molten

adjective

mol·​ten ˈmōl-tᵊn How to pronounce molten (audio)
1
: fused or liquefied by heat : melted
molten lava
2
: having warmth or brilliance : glowing
the molten sunlight of warm skiesT. B. Costain
3
obsolete : made by melting and casting

Examples of molten in a Sentence

Recent Examples on the Web
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Depending on need, the hot molten salt can be used to generate steam, which can power an electrical turbine. Abhishek Bhardwaj, Interesting Engineering, 4 Sep. 2025 These processes created microscopic craters and splashes of molten rock on the asteroid's surface, according to the paper. Sharmila Kuthunur, Space.com, 2 Sep. 2025 Steve Lundblad, a University of Hawaii at Hilo geology professor, said the vent may have gotten wider, leaving molten rock less pressurized. CNN Money, 2 Sep. 2025 Lakes gleamed like molten metal in the dryness and on the horizon a faint squiggle of suede-soft mountains. The Editors, Outside, 31 Aug. 2025 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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Cite this Entry

“Molten.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/molten. Accessed 11 Sep. 2025.

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

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