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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The flipping technique for his classic, beautifully molten-on-the-inside Spanish tortilla takes a good amount of practice to master. General Manager, Los Angeles Times, 14 June 2026 Xcimer intends to address this by using a moving curtain of molten salt inside the reactor chamber instead of a static solid wall. Aman Tripathi, Interesting Engineering, 11 June 2026 This collision was powerful enough to reduce the moon’s surface to molten rock similar to a lava flow. Andrew Paul, Popular Science, 10 June 2026 Part of that use is simply imparting energy into a blanket of molten salt that surrounds the fusion chamber. ArsTechnica, 9 June 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 21 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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