D defs.my
Entry 1 sense Webster, 1913

Contamination

/(kŏn*tăm`ĭ*nā"shŭn)/ · Con·tam·i·na·tion · IPA /kənˌtæm.əˈneɪ.ʃən/
01 n. The act or process of contaminating; pollution; defilement; taint; also, that which contaminates.
  1. 1.
    The act or process of contaminating; pollution; defilement; taint; also, that which contaminates.