crucible /krooˈsi-bl/

1. An earthen pot for melting ores, metals, etc
2. A severe test or trial (figurative)

• intangiblenesses
• intangibles
• intangibly
• intarsia
• intarsias
• in tatters
• in tears
• integer
• integers
• Integra
• integrability
• integrable
• integral
• integral calculus
• integral function
• integral functions
• integralities
• integrality
• integrally
• integrals
• integrand
• integrands
• integrant
• integrants
• integrate