Crucible
['kruːsɪb(ə)l] or ['krʊsəbl]
Definition
(noun.) a vessel made of material that does not melt easily; used for high temperature chemical reactions.
Checker: Osbert--From WordNet
Definition
(n.) 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.
(n.) A hollow place at the bottom of a furnace, to receive the melted metal.
(n.) A test of the most decisive kind; a severe trial; as, the crucible of affliction.
Typed by Gilda
Definition
n. an earthen pot for melting ores metals &c.
Typed by Cecil
Examples
- After boiling, an d then cooling rapidly, the contents of the crucible proved a black glass. Walter Libby. An Introduction to the History of Science.
- He later enclosed some fragments of whinstone in a black-lead crucible and subjected it to intense heat in the reverberating furnace of an iron foundry. Walter Libby. An Introduction to the History of Science.
- The crucible is now covered and the fusion kept up for about thirty-five minutes, when the dross is skimmed off, and the alloy found ready for use. William K. David. Secrets of Wise Men, Chemists and Great Physicians.
- Again he heated the crucible in the fur nace, and removed quickly to an open fire, which was maintained some hours and then perm itted to die out. Walter Libby. An Introduction to the History of Science.
- Carbon crucible kept brilliantly incandescent by current in vacuo, for obtaining reaction with refractory metals. Frank Lewis Dyer. Edison, His Life and Inventions.
- All of them burned with desire to be near to the crucible in which the political and social systems of the world were to be melted and recast. H. G. Wells. The Outline of History_Being a Plain History of Life and Mankind.
- Between that time and 1770 he practised melting small pieces of blistered steel (iron bars which had been carbonised by smelting in charcoal) in closed clay crucibles. William Henry Doolittle. Inventions in the Century.
- Furnaces to hold the crucibles, and made of iron cylinders lined with fire brick, whereby the crucibles were subjected to greater heat, were also known. William Henry Doolittle. Inventions in the Century.
Checker: Shari