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English definition of “contaminate”

contaminate

verb [T]     /kənˈtæmɪneɪt/ ENVIRONMENT
to make something less pure or make it poisonous : The government recently reported that 10% of farmland has been destroyed by pollution and that heavy metals contaminate 12 million tons of grain a year . There are fears that exported products could contaminate food supplies abroad .
contamination noun [U]
(Definition of contaminate verb from the Cambridge Business English Dictionary © Cambridge University Press)
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