A powerful insecticide that is also poisonous to humans and animals. It remains active in the environment for many years and has been banned in the United States for most uses since 1972. Short for dichlorodiphenyltrichloroethane C14H9Cl5.

DDT. (n.d.) The American Heritage® Dictionary of Student Science, Second Edition. (2014). Retrieved August 14 2016 from http://www.thefreedictionary.com/DDT

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