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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Much like oil and gas, geothermal energy, which harnesses the planet’s molten core to make steam, had long been confined to the places where access came easy—the American West, where Yellowstone’s famous geysers hint at the heat below, or volcanic Iceland. Alexander C. Kaufman, The Atlantic, 4 Apr. 2025 That’s the subtle magnetic force — generated by the planet’s molten metal core — that surrounds Earth, not unlike the force around a bar magnet. Benji Jones, Vox, 1 Apr. 2025 The molten rock was contained within the park and wasn't threatening residential areas. CBS News, 21 Mar. 2025 However, these formations can also arise from volcanic processes, such as the rapid cooling of molten rock droplets during an eruption, or from meteorite impacts, upon which vaporized rocks condense. Sharmila Kuthunur, Space.com, 26 Mar. 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 13 Apr. 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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