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English definition of “contaminate”

contaminate

verb [T] uk   /kənˈtæm.ɪ.neɪt/ us  
to make something less pure or make it poisonous: Much of the coast has been contaminated by nuclear waste. The food which had been contaminated was destroyed.Making things dirty and untidy
contaminated
adjective uk   /-neɪ.tɪd/ us    /-neɪ.t̬ɪd/
The infection was probably caused by swimming in contaminated water/water contaminated with sewage.Dirty and untidy
contamination
noun [U] uk   /kənˌtæm.ɪˈneɪ.ʃən/ us  
The water supply is being tested for contamination (= the presence of unwanted or dangerous substances).Dirt and untidiness
(Definition of contaminate from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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