zone refining
noun
a technique for producing solids of extreme purity, esp for use in semiconductors. The material, in the form of a bar, is melted in one small region that is passed along the solid. Impurities concentrate in the melt and are moved to the end of the bar
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Words nearby zone refining
zone of interior, zone of leaching, zone of saturation, zone out, zone plate, zone refining, zonesthesia, zone system, zone time, Zonian, zonifugal
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