efficacy
Use Efficacy in a sentence
ɪ noun, plural ef·fi·ca·cies.
capacity for producing a desired result or effect; effectiveness: a remedy of great efficacy.
Related forms
non·ef·fi·ca·cy, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Link To efficacy
Collins
World English Dictionary
efficacy (ˈɛfɪkəsɪ) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —n | |
| the quality of being successful in producing an intended result; effectiveness | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
00:10
Efficacy
is a GRE word you need to know.
So is torpid. Does it mean:
| consisting or made of wood; wood: |
| slow; dull; apathetic; lethargic. |
Etymonline
Word Origin & History
efficacy
1520s, from L. efficacia, from efficax (gen. efficacis) "effective," from efficere "work out, accomplish" (see effect).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Use a standard debate procedure and have the non-debating students evaluate the efficacy of the arguments.
Strong crypto, in their view, was an answer of almost magical efficacy.
Researchers are now trying to find out to what extent the efficacy and safety of many new drugs is influenced by genetic factors.
Of course, past spending can be useful evidence for the efficacy of future spending.
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