impurity

CEFR: C1-C2 /im-pu-ri-ty/ [ih2.m.p.y.uh1.r.ah0.t.iy0]

Definition: A constituent which impairs the purity of something

Example Sentences:

The impurities dissolve in lead and evaporate leaving behind silver and gold. Aluminium and lead are impurities frequently found in tap water.