Definition of pollutant noun from the Oxford Advanced Learner's Dictionary

 

pollutant

 noun
noun
BrE BrE//pəˈluːtənt//
 
; NAmE NAmE//pəˈluːtənt//
 
(formal)
 
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a substance that pollutes something, especially air and waterExtra examples Both are common pollutants and suspected carcinogens. a washable filter to reduce air pollutants pollutants from nearby industries pollutants in exhaust gases
See the Oxford Advanced American Dictionary entry: pollutant