Definition of pesticide noun from the Oxford Advanced American Dictionary

 

pesticide

 noun
noun
NAmE//ˈpɛstəˌsaɪd//
 
[countable, uncountable]
 
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a chemical used for killing pests, especially insects vegetables grown without the use of pesticides crops sprayed with pesticide see also herbicide, insecticide
See the Oxford Advanced Learner's Dictionary entry: pesticide