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
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.
Nestled in a warm, soft pretzel bun, this bold creation features a juicy beef patty surrounded by a bubbling pool of molten fondue cheese—rich, creamy, and irresistible. Aly Walansky, Forbes.com, 22 July 2025 There, a mantle plume or upwelling — a pillar of unusually warm molten material — moves upwards, driving the division of these rifts and the opening of the ocean basin above. Sam Walters, Discover Magazine, 25 June 2025 In contrast, the mantle, which lies between the planet’s outer crust and the molten core, is 1,800 miles (2,897 kilometers) of mostly solid rock. Jacopo Prisco, CNN Money, 30 May 2025 Researchers haven’t been sure exactly what drives this rifting, but a new study in Nature Geoscience suggests it is caused by rhythmic pulses of molten rock from deep below the surface. Nora Bradford, Scientific American, 7 July 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 29 Jul. 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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