crucible in German

(chemistry) A cup-shaped piece of laboratory equipment used to contain chemical compounds when heating them to very high temperatures.

A heat-resistant container in which metals are melted, usually at temperatures above 500°C, commonly made of graphite with clay as a binder.

A heat-resistant container in which metals are melted, usually at temperatures above 500°C, commonly made of graphite with clay as a binder.

(figuratively) A very difficult and trying experience, that acts as a refining or hardening process.