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

 

DDT

 noun
noun
BrE BrE//ˌdiː diː ˈtiː//
 
; NAmE NAmE//ˌdiː diː ˈtiː//
 
[uncountable]
 
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a chemical used, especially in the past, for killing insects that harm crops
See the Oxford Advanced American Dictionary entry: DDT