1. in a manner relating to or involving the use of insecticide; so as to kill or control insects
Usage: technical/scientific context; typically used in agricultural, medical, or pest-control discussions

Examples

• The crop was treated insecticidally to eliminate the pest infestation.
• The spray acts insecticidally by disrupting the nervous system of target insects.
• Farmers applied the compound insecticidally across the entire field.
• The substance works insecticidally without harming beneficial organisms.
• The treatment was administered insecticidally through aerial application.