Efficacy

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Dictionary Meaning and Definition on 'Efficacy'

Efficacy Meaning and Definition from WordNet (r) 2.0
    efficacy n : capacity or power to produce a desired effect; "concern about the safety and efficacy of the vaccine" [syn: efficaciousness] [ant: inefficacy]
Efficacy Meaning and Definition from Webster's Revised Unabridged Dictionary (1913)
    Efficacy \Ef"fi*ca*cy\, n. [L. efficacia, fr. efficax. See Efficacious.] Power to produce effects; operation or energy of an agent or force; production of the effect intended; as, the efficacy of medicine in counteracting disease; the efficacy of prayer. ``Of noxious efficacy.'' --Milton. Syn: Virtue; force; energy; potency; efficiency.

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Wikipedia Meaning and Definition on 'Efficacy'


  • Efficacy: Efficacy is the capacity to produce an effect. It has different specific meanings in different fields. Context Healthcare : efficacy ...
  • Luminous efficacy: Luminous efficacy is a figure of merit for light source s. It is the ratio of luminous flux to power . Depending on context, the power ...
  • Vaccine efficacy: Vaccine efficacy is defined as the reduction in the incidence of a disease among people who have received a vaccine compared to the ...
  • Self-efficacy: Self-efficacy has been defined in a variety of ways: as the belief that one is capable of performing in a certain manner to attain certain ...
  • Efficacy of prayer: Determining the efficacy of prayer has been attempted in various studies since Francis Galton first addressed it in 1872. Some studies ...
  • Political efficacy: Political efficacy is a theoretical concept used to explain political behaviour in Political Science . It indicates citizen s' faith and ...
  • Work Self-Efficacy: Noted to be a different construct than task-specific self-efficacy, though a possible predictor, general self-efficacy is thought to be a ...
  • Drug Efficacy Study Implementation: Drug Efficacy Study Implementation (DESI) was a program begun by the Food and Drug Administration (FDA) in the 1960s after the requirement ...
  • Animal Efficacy Rule: The FDA Animal Efficacy Rule (finalized May 2002) applies to development/testing of drugs / biologicals to reduce or prevent serious/life- ...

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'Efficacy' in famous quotation sentence


* The metaphor is perhaps one of man's most fruitful potentialities. Its efficacy verges on magic, and it seems a tool for creation which God forgot inside one of His creatures when He made him. - Jose Ortega y Gasset


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