efficacy

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ef·fi·ca·cy

 (ĕf′ĭ-kə-sē)
n.
Power or capacity to produce a desired effect; effectiveness.

[Latin efficācia, from efficāx, efficāc-, efficacious; see efficacious.]

efficacy

(ˈɛfɪkəsɪ) or

efficaciousness

n
the quality of being successful in producing an intended result; effectiveness

ef•fi•ca•cy

(ˈɛf ɪ kə si)

n.
capacity for producing a desired result or effect; effectiveness.
[1520–30; < Latin]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.efficacy - capacity or power to produce a desired effect; "concern about the safety and efficacy of the vaccine"
effectiveness, effectivity, effectuality, effectualness - power to be effective; the quality of being able to bring about an effect
inefficaciousness, inefficacy - a lack of efficacy

efficacy

noun effectiveness, efficiency, power, value, success, strength, virtue, vigour, use, usefulness, potency, fruitfulness, productiveness, efficaciousness Recent medical studies confirm the efficacy of a healthier lifestyle.

efficacy

noun
The power or capacity to produce a desired result:
Translations
فاعِلِيَّه
effektvirkning
tehokkuus
verkun, áhrif; gagn
efektywnośćsktuteczność
effektivitet
yararlılık

efficacy

[ˈefɪkəsɪ] N (frm) → eficacia f

efficacy

[ˈɛfɪkəsi] nefficacité f

efficacy

nWirksamkeit f

efficacy

[ˈɛfɪkəsɪ] n (frm) → efficacia

efficacious

(efiˈkeiʃəs) adjective
producing the result intended. The medicine was most efficacious.
efficacy (ˈefikəsi) noun

efficacy

n eficacia, efectividad f; (clinical research) eficacia bajo condiciones controladas; [Note: While English-speaking health professionals often distinguish between efficacy and effectiveness, most Spanish-speaking health professionals use eficacia and efectividad interchangeably.]
References in periodicals archive ?
However, levels of perfect use were too low to have a measurable impact on the overall STD rate.
Practice Perfect uses everyday examples to get the point across that organizations must not rely on redundant exercises that may or may not contribute to more successful, efficient employees.
Aimed at women aged 60 and older, the new three-product sub-range Plenitude Age Perfect uses new skin care technology called Dermo-Peptide.