1. A set of systematic steps or methods used to eliminate or destroy pests, vermin, or unwanted organisms completely
The building underwent extermination procedures to eliminate the cockroach infestation.
O prédio passou por procedimentos de extermínio para eliminar a infestação de baratas.
2. Formal protocols or guidelines established for the complete removal of something unwanted
New extermination procedures were implemented to control the rodent population.
Novos procedimentos de extermínio foram implementados para controlar a população de roedores.