Efficacy meaning: The noun ' efficacy ' has its

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 ... Efficacy definition : the capacity for producing a desired result or effect.. See examples of EFFICACY used in a sentence. Definition of efficacy noun in Oxford Advanced Learner's Dictionary. Meaning , pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. EFFICACY meaning : 1. the ability of something to produce the intended result: 2. how well a particular treatment or…. Learn more.