Definitions for efficacy
ˈɛf ɪ kə sief·fi·ca·cy

Princeton's WordNetRate this definition:0.0 / 0 votes

1. efficacy, efficaciousnessnoun

   capacity or power to produce a desired effect

   "concern about the safety and efficacy of the vaccine"

WiktionaryRate this definition:0.0 / 0 votes

1. efficacynoun

   Ability to produce a desired amount of a desired effect.

2. Etymology: From efficacia, from efficax; see efficacious.

Samuel Johnson's DictionaryRate this definition:0.0 / 0 votes

1. Efficacynoun

   Power to produce effects; production of the consequence intended.

   Etymology: from efficax, Latin.

   Whatsoever is spoken concerning the efficacy or necessity of God’s word, the same they tie and restrain only unto sermons. Richard Hooker, b. v. s. 21.

   Whether if they had tasted the tree of life before that of good and evil, they had suffered the curse of mortality; or whether the efficacy of the one had not overpowered the penalty of the other, we leave it unto God. Thomas Browne, Vulg. Err.

   Efficacy is a power of speech which represents a thing, by presenting to our minds the lively ideas or forms of things. Henry Peacham, on Drawing.

   The apostle tells us of the success and efficacy of the Gospel upon the minds of men; and, for this reason, he calls it the power of God unto salvation. John Tillotson, Sermons.

   The arguments drawn from the goodness of God have a prevailing efficacy to induce men to repent. John Rogers, Sermon 16.

WikipediaRate this definition:0.0 / 0 votes

1. Efficacy

   Efficacy is the ability to perform a task to a satisfactory or expected degree. The word comes from the same roots as effectiveness, and it has often been used synonymously, although in pharmacology a distinction is now often made between efficacy and effectiveness.The word efficacy is used in pharmacology and medicine to refer both to the maximum response achievable from a pharmaceutical drug in research settings, and to the capacity for sufficient therapeutic effect or beneficial change in clinical settings.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Efficacynoun

   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

WikidataRate this definition:0.0 / 0 votes

1. Efficacy

   Efficacy is the capacity to produce an effect. It has different specific meanings in different fields. In medicine, it is the ability of an intervention or drug to produce a desired effect.

Editors ContributionRate this definition:0.0 / 0 votes

1. Efficacy

   Efectividad manifiesta.

   
   

   Submitted by ector on March 31, 2019  

Suggested ResourcesRate this definition:0.0 / 0 votes

1. Efficacy

   Efficacy vs. Efficiency -- In this Grammar.com article you will learn the differences between the words Efficacy and Efficiency.

Matched Categories

1. • Effectiveness

How to pronounce efficacy?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say efficacy in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of efficacy in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of efficacy in Pythagorean Numerology is: 4

Examples of efficacy in a Sentence

1. David Montefiori:

   The efficacy might be reduced somewhat, but it may still be very effective, hopefully, the vaccine will still be 70-80 % effective.

2. Ilhan Omar:

   It is as if every time we say something that is supposed to be about foreign policy or engagement or the efficacy of ending oppression or the freeing of every human life and wanting dignity, we get labeled by something that end the discussion, because we end up defending that and no one gets to have the proper debate about what is happening in Palestine.

3. Chief Executive Flemming Ornskov:

   The designation is normally given if a compound potentially would bring significant progress either in terms of safety or efficacy, so we take that as a positive sign.

4. Theodore Roosevelt:

   The great lawyer who employs his talent and his learning in the highly emunerative task of enabling a very wealthy client to override or circumvent the law is doing all that in him lies to encourage the growth in the country of a spirit of dumb anger against all laws and of disbelief in their efficacy.

5. Merrick Garland:

   States may not ban Mifepristone based on disagreement with the FDA’s expert judgment about its safety and efficacy.

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References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=efficacy
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Efficacy
3. ^ Samuel Johnson's Dictionary
   https://johnsonsdictionaryonline.com/views/search.php?term=efficacy
4. ^ Wikipedia
   https://en.wikipedia.org/wiki/Efficacy
5. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/efficacy
6. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=efficacy