| Pronunciation: | | 'efukusee
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 WordNet Dictionary |
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| | Definition: | |
[n] capacity or power to produce a desired effect |
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EFFICACY is a 8 letter word that starts with E. |
| | Synonyms: | | efficaciousness |
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| | Antonyms: | | inefficaciousness, inefficacy |
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| | See Also: | | effectiveness, effectivity, effectuality, effectualness |
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| Webster's 1913 Dictionary |
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| | Definition: | | \Ef"fi*ca*cy\, n. [L. efficacia, fr. efficax. See
{Efficacious}.]
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.
``Of noxious efficacy.'' --Milton.
Syn: Virtue; force; energy; potency; efficiency.
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| Biology Dictionary |
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| | Definition: | | Having the ability or power to produce a desired effect. |
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