Definition of "pollutant" [pollutant]

• Something that pollutes, especially a waste material that contaminates air, soil, or water. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "SCOTUS cited CAA as clearly defining what a pollutant is and determined that CO2 was therefor a pollutant removing that argument."
• "It was the Supreme Court, not the EPA, that decided in 2007 that carbon dioxide meets the definition of pollutant under the Clean Air Act—a law enacted by a democratically elected Congress and signed by a democratically elected President, George H.W. Bush."
• "In 1989, coal companies and the Edison Electric Institute hired Temple Barker and Sloane, a pro-industry research organization, to conduct an economic analysis of the effects of a cap & trade system on sulphur dioxide (SO2), the main pollutant that causes acid rain."