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.
Craft your own pumpkin, blown by professionals out of hot molten glass. Caroline Ritzie, Cincinnati Enquirer, 28 Sep. 2025 The sugary aroma wafts down Main Street, where artisans continue the century-old tradition of pouring, paddling, and slicing molten fudge into glossy, irresistible bricks. Christine Chitnis, Vogue, 24 Sep. 2025 This cake is best slightly underbaked so the center is molten like a lava cake. The New York Times News Service Syndicate, San Diego Union-Tribune, 10 Sep. 2025 To bring sand to its molten state, the furnace must be heated to over 2,700 degrees Fahrenheit (1,500 degrees Celisus) for as long as 50 hours, which requires burning fossil fuels such as natural gas, releasing greenhouse gases. Aki Ishida, The Conversation, 10 Sep. 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

Browse Nearby Words

Cite this Entry

“Molten.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/molten. Accessed 10 Oct. 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

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!