a poisonous chemical used for killing insects that destroy crops. It also kills animals and is dangerous to humans, so is no longer allowed in many countries. This kind of chemical is called a pesticide or an insecticide.
Synonyms and related words
Controlling weeds, insects and pests
camphor
citronella
crop-dusting
DDT
noun uncountable
US /ˌdi di ˈti/
DEFINITIONS1
1
a poisonous chemical used for killing insects that destroy crops. It also kills animals and is dangerous to humans, so is no longer allowed in many countries. This kind of chemical is called a pesticide or an insecticide.