[with obj.](常作be contaminated)make (something) impure by exposure to or addition of a poisonous or polluting substance 使不纯;污染;弄脏;毒害 the site was found to be contaminated by radioactivity. 发现此地受放射性污染。 the entertainment industry is able to contaminate the mind of the public. 娱乐业能毒害公众的思想。 [as adj. contaminated]contaminated blood products. 受污染的血液制品。
late Middle English: from Latin contaminat- 'made impure', from the verb contaminare, from contamen 'contact, pollution', from con- 'together with' + the base of tangere 'to touch'