efficacy
ef|fi|ca|cy /'efɪkəsi/
[N-UNCOUNT] usu with poss
If you talk about the efficacy of something, you are talking about its effectiveness and its ability to do what it is supposed to. (FORMAL)
Recent medical studies confirm the efficacy of a healthier lifestyle.
[N-UNCOUNT] usu with poss
If you talk about the efficacy of something, you are talking about its effectiveness and its ability to do what it is supposed to. (FORMAL)
Recent medical studies confirm the efficacy of a healthier lifestyle.