Efficacy meaning: Efficacy definition

Efficacy definition : the capacity for producing a desired result or effect.. See examples of EFFICACY used in a sentence. The noun ' efficacy ' has its etymological origins in Latin. It is derived from the Latin word 'efficacia,' which is formed from 'efficax,' meaning 'effective' or 'powerful,' and the suffix '-ia,' indicating a quality or state. In its original Latin sense, ' efficacy ' conveyed the idea of being effective or possessing the power to produce desired results. Over time, it evolved to describe the ability or capacity of something, typically a method, treatment, or intervention, to produce the ... The meaning of EFFICACY is the power to produce an effect. How to use efficacy in a sentence. The difference between efficacy and efficiency is their focus. Efficacy focuses on effectiveness and it measures whether the goal is achieved, whereas efficiency focuses on optimization and it achieves the goal with minimal waste.