molten

adjective

mol·​ten ˈmōl-tᵊn How to pronounce molten (audio)
Synonyms of moltennext
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
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Part of that use is simply imparting energy into a blanket of molten salt that surrounds the fusion chamber. ArsTechnica, 9 June 2026 Start with the warm gougères, airy choux puffs with a molten brie center that arrive drizzled with honey and dusted with parmesan. Jessi Roti, Bon Appetit Magazine, 5 June 2026 The chocolatey, ooey, gooey molten cake is filled with sweet, tart raspberries for the perfect bite. Phoebe Evans, Southern Living, 29 May 2026 The molten iron could then be fed into the facility’s existing basic oxygen furnaces to create steel, according to GARD. Maya Wilkins, Chicago Tribune, 29 May 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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Cite this Entry

“Molten.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/molten. Accessed 12 Jun. 2026.

Kids Definition

molten

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

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