Efficacy
['efɪkəsɪ] or ['ɛfɪkəsi]
Definition
(noun.) capacity or power to produce a desired effect; 'concern about the safety and efficacy of the vaccine'.
Edited by Ervin--From WordNet
Definition
(n.) 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.
Typed by Joan
Synonyms and Synonymous
n. Potency, competency, power, strength, force, efficiency.
Checked by Jessie
Synonyms and Antonyms
SYN:Efficiency, competency, virtue, agency, capability, usefulness, energy,productiveness, effectiveness
ANT:Inefficiency, inutility, ineffectiveness
Inputed by Deborah
Examples
- The third, those in which the efficacy of industry is either limited or uncertain. Adam Smith. An Inquiry into the Nature and Causes of the Wealth of Nations.
- It was this weapon which in the Civil War gave proof of the deadly efficacy of the breech-loading magazine gun, and its superiority to the old style military arm. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
- And if prayers have efficacy, yours will benefit me. Charlotte Bronte. Shirley.
- The assimilative force of the American public school is eloquent testimony to the efficacy of the common and balanced appeal. John Dewey. Democracy and Education.
- Thus taken, the influence of heredity is opposed to that of the environment, and the efficacy of the latter belittled. John Dewey. Democracy and Education.
- We never have any impression, that contains any power or efficacy. David Hume. A Treatise of Human Nature.
- But it is from this resemblance, that the ideas of necessity, of power, and of efficacy, are derived. David Hume. A Treatise of Human Nature.
- The poor woman evidently believed in its efficacy; her only feeling was indignation that her cat had been chosen out from all others for a sacrifice. Elizabeth Cleghorn Gaskell. North and South.
- In multiplying this sort of rude produce, therefore, the efficacy of human industry is not only limited, but uncertain. Adam Smith. An Inquiry into the Nature and Causes of the Wealth of Nations.
- It would take a strong animal to test the efficacy of his new scheme. Edgar Rice Burroughs. Tarzan of the Apes.
- The very mysteriousness of such a cure made her the more confident of its efficacy. Edith Wharton. The Age of Innocence.
- No cause can succeed without them: so long as you rely on the efficacy of scientific demonstration and logical proof you can hold your conventions in anybody's back parlor and have room to spare. Walter Lippmann. A Preface to Politics.
- The devoutest person could have rendered no greater homage to the efficacy of an honest prayer than he did in this distrust of his wife. Charles Dickens. A Tale of Two Cities.
- I can vouch for its efficacy in his case, as it removed the unnatural color in a few days, and he told me that others had tried it with equally gratifying results. William K. David. Secrets of Wise Men, Chemists and Great Physicians.
- Does it fit into his more direct acquaintance so as to increase its efficacy and deepen its meaning? John Dewey. Democracy and Education.
Checker: Maryann