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.
'impurity' also found in these Oxford entries:

