efficacité
Meanings
Noun
1. efficiency, effectiveness
2. efficacy
Examples3
Cela augmentera l'efficacité de 20 %.
This will increase efficiency by 20%.
Ne doutez pas de l'efficacité de ce médicament.
Don't doubt the effectiveness of this medicine.
Ne confondez pas efficacité et rendement.
Don't confuse "efficacy" with "efficiency".