1. an organism, such as an insect or parasite, that infests a place or host
Usage: technical/scientific

1. causing or capable of causing infestation
Usage: technical/scientific

Examples

• The infestant population in the grain storage grew rapidly without proper pest control.
• Mosquitoes are a common infestant in tropical regions during the rainy season.
• The infestant organisms were identified under a microscope by the laboratory technician.
• Farmers use pesticides to control infestant insects that damage their crops.
• The building required treatment to eliminate the infestant pests living in the walls.