bessemer converter(n = noun.artifact) Array - a refractory-lined furnace used to convert pig iron into steel by the Bessemer process; Array
is a kind of converter, convertor
is a part of steel factory, steel mill, steel plant, steelworks

bessemer converter, n. a special furnace used to purify pig-iron using the Bessemer process.

Etymology:
Sir H. Bessemer, Engl. engineer d. 1898

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