Webster 1913 Edition
crucibuluma hanging lamp, an earthen pot for melting metals (cf. OF.
creuseul, sort of lamp, crucible, F.
creusetcrucible), prob. of German origin; cf. OHG.
krüsel, hanging lamp,
kruus, mug, jug, jar, D.
kroescup, crucible, Dan.
cruse. It was confused with derivatives of L.
Crosslet), and crucibles were said to have been marked with a cross, to prevent the devil from marring the chemical operation. See
Cruse, and cf.
A vessel or melting pot, composed of some very refractory substance, as clay, graphite, platinum, and used for melting and calcining substances which require a strong degree of heat, as metals, ores, etc.
A hollow place at the bottom of a furnace, to receive the melted metal.
A test of the most decisive kind; a severe trial;
a cheap, brittle, and fragile, but very refractory crucible, composed of the finest fire clay and sand, and commonly used for a single heating; – named from the place of manufacture.
Webster 1828 Edition
1.A chemical vessel or melting pot, made of earth, and so tempered and baked, as to endure extreme heat without melting. It is used for melting ores, metals, &c.
2.A hollow place at the bottom of a chemical furnace.