noun
DDT; dichlorodiphenyltrichloroethane
A synthetic insecticide, now banned in many countries due to environmental persistence and health concerns. Used in chemistry and environmental science contexts.
ＤＤＴはかつて広く使われた殺虫剤です。
DDT is an insecticide that was once widely used.
環境中でのＤＤＴの残留性が問題になった。
The persistence of DDT in the environment became a problem.