Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. Power or capacity to produce a desired effect; effectiveness.
Century Dictionary and Cyclopedia
- n. The quality of being efficacious or effectual; production of, or the capacity of producing, the effect intended or desired; effectiveness.
- n. Synonyms Efficiency, etc. (see effectiveness); virtue, force, energy.
Wiktionary
- n. uncountable Ability to produce a desired amount of a desired effect.
GNU Webster's 1913
- n. Power to produce effects; operation or energy of an agent or force; production of the effect intended
WordNet 3.0
- n. capacity or power to produce a desired effect
Etymologies
- From Latin efficacia ("efficacy"), from efficax ("efficacious"); see efficacious. (Wiktionary)
- Latin efficācia, from efficāx, efficāc-, efficacious; see efficacious. (American Heritage® Dictionary of the English Language, Fourth Edition)
Examples
“It has been shown to have long-term efficacy, meaning it could be administered in small doses, potentially reducing severity of side effects.”
“The rise in efficacy of “Terrorism” is largely from the increased availability in inexpensive but highly effective weapons and equipment.”
“More information on the homeopathic treatment of mental illness and more scientific evidence verifying its efficacy is contained in a newly published textbook on the subject, Homeopathy and Mental Health Care: Integrative Practice, Principles, and Research.”
The Huffington Post: Dana Ullman: Homeopathy: A Healthier Way to Treat Depression?
“In my own clumsy way I am merely trying to point out that thinking that you can understand Buddhist practice and thought without experiencing them and accepting the possibility of their efficacy is kind of like pretending to understand science while disbelieving the validity of mathematics.”
A New Hope for Interstellar Travel? « L.E. Modesitt, Jr. – The Official Website
“I am fairly skeptical about the long-term efficacy of this intervention," said Yunosuke Ikeda, chief foreign-exchange strategist at Nomura Securities Co.”
The Wall Street Journal: Japan's Woes Remain Despite Currency Move
“If duration of efficacy is less than fifteen years, then no cancers are prevented, only postponed.”
The Huffington Post: Marcia G. Yerman: An Interview with Dr. Diane M. Harper, HPV Expert
“• Duration of efficacy is key to the entire question.”
The Huffington Post: Marcia G. Yerman: An Interview with Dr. Diane M. Harper, HPV Expert
“Not because they're corrupt, or deceitful or because they don't believe in efficacy of the public option, but because they don't believe the system would allow it to happen.”
“However, one of our group has an interesting alternate proposal – that the points go up in efficacy as you use them.”
“Those chosen enter an oligopolistic "industry" encompassing businesses (corporate finance, M&A, asset management) whose efficacy is rarely questioned, let alone their fee structures, and a capital markets operation premised on levering up in a mad quest for excess yield.”
Lists
These user-created lists contain the word ‘efficacy’.
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GRE 2014
abate, abdicate, abase, aberrant, abeyance, abhor, abjure, abortive, abound, abrasive, abreast, abridge and 1577 more...
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GRE Barrons Wordlist
A complete Barron's Wordlist for GRE preparation. Your online flashcard replacement.
abase, abash, abate, abbreviate, abdicate, aberrant, aberration, abet, abeyance, abhor, abject, abjure and 4087 more...
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GRE Barron's 800
abate, abdicate, aberrant, abeyance, abject, abjure, abscission, abscond, abstemious, abstinence, abysmal, accretion and 787 more...
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From reading
Collected from reading
venerate, reprobate, reticent, adoration, ethereal, ephemeral, equivocal, contumacious, heinous, solicitous, agnostic, aberration and 335 more...
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EN - eloquence in public speaking
Key words from "The Training of a Public Speaker" by Grenville Kleiser (New York and London, 1920)
beget, imago, approbation, orator, peroration, Cicero, eloquence, elocution, rhetoric, premeditate, plead, Isocrates and 264 more...
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Words build meanings from origins( et...
These come from gamma meditation ,I think.
discursive, exogenous, machinations, purportedly, sumptuous, congruity, cantankerous, incongruous, festoon, hessian, ratiocinative, stratigraphic and 2046 more...
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Quacksalvers et al. Nostrum
Bring forth the cathartic illumination on malignant,maniacal,medical,menage a trios and more egotists stymie
culpability, piousfraud, capacitous, rhabdomyolysis, scapula, idiosyncrasy, quiescent, malignant, nefarious, sociological, sociopath, pathogen and 202 more...
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GRE
droll, dyspeptic, ebullient, ardor, edify, efficacy, malinger, mannered, martinet, maudlin, mendacious, mendicant and 101 more...
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Ditrochaic Words with the Accent on t...
This is my favorite meter for single words. You could call it BUH-duh-buh-duh.
I collect them and cherish them; please add some. Phrases are also accepted if they've, you know, got it.helicopter, stratocaster, watermelon, telecaster, percolator, studebaker, flabbergasted, dramaturgy, carburator, copenhagen, pomegranate, metallurgy and 13 more...
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common/uncommon GRE
Combination some common, some uncommon preparation of GRE words.
thwart, schmooze, siren, ebullient, eclectic, efficacy, adorn, felicitous, grandiloquent, eloquence, epitomize, vilify and 10 more...
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big book gre
abase, abbess, abbey, abbot, abdicate, abdomen, abdominal, abduction, abed, aberration, abet, abeyance and 6691 more...
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to memorize
words i need to memorize
aberrant, abscond, advocate, aggrandize, amalgamate, ambiguous, ambrosial, anomalous, antediluvian, antipathy, arbitrate, assuage and 163 more...
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GRE
pejorative, austere, unconscionable, lissome, edify, winsome, axiom, malinger, abjure, deleterious, contumacious, peregrinate and 152 more...
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Words from Moby Dick
frigate, presumptuous, genteel, succor, hearthstone, gentry, factitious, bilious, insurgent, portent, enervate, genuflect and 303 more...
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Latin Spelling Bee List
need to know these words!!!!!!!!!!!!!!!!!
inane, ambivalent, incriminate, interrupt, amicable, meticulous, animosity, curriculum, electoral, transect, condolences, bugle and 132 more...
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Out of Book Words
commiserate, equanimity, dulcet, cursory, diffident, profligate, egregious, precocious, dissemble, aggregate, efficacy, ingenuous and 100 more...
Tweets
Looking for tweets for efficacy.
vermontster Don't confuse with effective. They will know that you are impersonating a serious grad student. Jun 28, 2008