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Definitions of efficacy

  1. capacity or power to produce a desired effect Scrapingweb Dictionary DB
  2. Virtue: energy. The american dictionary of the english language. By Daniel Lyons. Published 1899.
  3. Efficacious. The Concise Standard Dictionary of the English Language. By James Champlin Fernald. Published 1919.
  4. Power to produce effects; virtue; energy. The Clarendon dictionary. By William Hand Browne, Samuel Stehman Haldeman. Published 1894.
  5. Power to produce effect; effective energy. The Concise Standard Dictionary of the English Language. By James Champlin Fernald. Published 1919.
  6. Power to produce a given effect. Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914.
  7. Power to produce effects; virtue; power; ability. Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.

What are the misspellings for efficacy?

Usage examples for efficacy

  1. Many of the Italian artists that I knew believed in the efficacy of coral as a talisman and always kept a bit of it about them to rub " for luck" just before they went on for their part of the performance. – Memoirs of an American Prima Donna by Clara Louise Kellogg
  2. It is hardly surprising that savages attach a magic efficacy to words. – How We Think by John Dewey
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