Business / Agriculture / DDT: The abbreviated name of a chlorinated hydrocarbon insecticide, dichloro-diphenyl-trichloromethane. It is persistent in the environment and biomagnifies in birds of prey. The Environmental Protection Agency canceled U.S. registration of virtually all but emergency uses of DDT in 1972.
Health / Disease / Residual Spraying: The application of small amounts of insecticide to the interior walls of houses to kill and repel malaria-transmitting mosquitoes. DDT is the most common chemical used because it remains toxic to mosq MORE