crucible

noun

cru·​ci·​ble ˈkrü-sə-bəl How to pronounce crucible (audio)
Synonyms of cruciblenext
1
: a vessel of a very refractory (see refractory entry 1 sense 3) material (such as porcelain) used for melting and calcining a substance that requires a high degree of heat
2
: a severe test
He's ready to face the crucible of the Olympics.
3
: a place or situation in which concentrated forces interact to cause or influence change or development
… Mercury itself coalesced into a planet … from a swirling cloud of dust and gas, in the crucible of a high-pressure, high-temperature environment.Jacopo Prisco
… conditioned by having grown up within the crucible of Chinatown …Tom Wolfe
… the military's egalitarianism and common culture … in the crucible of combat.Gil Barndollar and Matthew C. Mai

Did you know?

Unless you’re studying Arthur Miller’s The Crucible in school, it may not be crucial to learn the story behind crucible, but it can’t hurt! Crucible looks like it should be closely related to the Latin combining form cruc- (“cross”); however, unlike crucial, it isn’t. It was forged instead from the Medieval Latin crucibulum, a noun for an earthen pot used to melt metals, and in English it first referred to a vessel made of a very heat-resistant material (such as porcelain) used for melting a substance that requires a high degree of heat. It’s possible that the resemblance between cruc- and crucible encouraged people to start using crucible to mean “a severe trial,” as that sense is synonymous with one meaning of cross, but the idea of simmering in a literal crucible also sounds plenty severe. The newest sense of crucible (“a situation in which great changes take place,” as in “forged in the crucible of war”) recalls the fire and heat required to transform some solids into liquids.

Examples of crucible in a Sentence

He's ready to face the crucible of the Olympics. His character was formed in the crucible of war.
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.
The Berlinale has long been considered a forum for political expression and a crucible for debate about important world affairs, but avoiding political comment has seemingly been a trend at this year’s event, whether by chance, design or out of fear. Andreas Wiseman, Deadline, 13 Feb. 2026 Founded in the 10th century, this complex of churches was a crucible of wisdom for calligraphers, philosophers and illuminators. Marlise Kast-Myers, San Diego Union-Tribune, 8 Feb. 2026 There’s no crucible more scrutinized in the sport than the Olympic Games. Los Angeles Times, 7 Feb. 2026 Crises’ crucibles often forge potent alliances. Jamie Holmes, Twin Cities, 22 Jan. 2026 See All Example Sentences for crucible

Word History

Etymology

Middle English corusible, from Medieval Latin crucibulum earthen pot for melting metals

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of crucible was in the 15th century

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Cite this Entry

“Crucible.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/crucible. Accessed 16 Feb. 2026.

Kids Definition

crucible

noun
cru·​ci·​ble ˈkrü-sə-bəl How to pronounce crucible (audio)
1
: a pot made of a substance not easily damaged by fire that is used for holding something to be treated under great heat
2
: a severe test

Medical Definition

crucible

noun
cru·​ci·​ble ˈkrü-sə-bəl How to pronounce crucible (audio)
: a vessel of a very refractory material (as porcelain) used for melting and calcining a substance that requires a high degree of heat

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