impurity


Concise Oxford English Dictionary © 2008 Oxford University Press:
impurity/ɪmˈpjʊərəti/
noun (pl. impurities)
  • 1 the quality or condition of being impure.
  • 2 a constituent which impairs the purity of something.
  • 3 Electronics a trace element deliberately added to a semiconductor; a dopant.
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