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crucible

Pronunciation: /ˈkruːsɪb(ə)l/

Definition of crucible

noun

a ceramic or metal container in which metals or other substances may be melted or subjected to very high temperatures: the crucible tipped and the mould filled with liquid metal
a situation of severe trial, or in which different elements interact, leading to the creation of something new:their relationship was forged in the crucible of war

Origin:

late Middle English: from medieval Latin crucibulum 'night lamp, crucible' (perhaps originally a lamp hanging in front of a crucifix), from Latin crux, cruc- 'cross'