We found 45 dictionaries with English definitions that include the word efficacy:
Click on the first link on a line below to go directly to a page where "efficacy" is defined.
 General (23 matching dictionaries)
- efficacy: Compact Oxford English Dictionary [home, info]
- efficacy: V2 Vocabulary Building Dictionary [home, info]
- efficacy: American Heritage Dictionary of the English Language [home, info]
- efficacy: Merriam-Webster's Online Dictionary, 11th Edition [home, info]
- efficacy: Cambridge International Dictionary of English [home, info]
- Efficacy: Wiktionary [home, info]
- efficacy: Webster's New World College Dictionary, 4th Ed. [home, info]
- efficacy: The Wordsmyth English Dictionary-Thesaurus [home, info]
- efficacy: Infoplease Dictionary [home, info]
- Efficacy, efficacy: Dictionary.com [home, info]
- efficacy: Online Etymology Dictionary [home, info]
- efficacy: UltraLingua English Dictionary [home, info]
- Efficacy: Wikipedia, the Free Encyclopedia [home, info]
- Efficacy: Online Plain Text English Dictionary [home, info]
- efficacy: Webster's Revised Unabridged, 1913 Edition [home, info]
- efficacy: Rhymezone [home, info]
- Efficacy: AllWords.com Multi-Lingual Dictionary [home, info]
- efficacy: Webster's 1828 Dictionary [home, info]
- efficacy: Free Dictionary [home, info]
- efficacy: Mnemonic Dictionary [home, info]
- efficacy: WordNet 1.7 Vocabulary Helper [home, info]
- efficacy: LookWAYup Translating Dictionary/Thesaurus [home, info]
- efficacy: Dictionary/thesaurus [home, info]
Art (1 matching dictionary)
- Efficacy: Health & Beauty Glossary [home, info]
Business (1 matching dictionary)
- efficacy: BusinessDictionary.com [home, info]
Medicine (13 matching dictionaries)
- efficacy: Dorland's Illustrated Medical Dictionary [home, info]
- Efficacy: AIDSinfo Glossary [home, info]
- efficacy: online medical dictionary [home, info]
- Efficacy: Glossary of Terms Used in Medicinal Chemistry [home, info]
- EFFICACY: Lay Terms for Consent Forms [home, info]
- Efficacy: Hair Facts [home, info]
- Efficacy: Hepatitis C Information Central [home, info]
- Efficacy: GI Disorders [home, info]
- Efficacy: Glossary of Medical Education Terms [home, info]
- Efficacy: AIDS Medical Glossary and Drug Chart [home, info]
- efficacy: Dictionary of Cancer Terms [home, info]
- efficacy: Glossary of HIV/AIDS Related Terms [home, info]
- efficacy: Medical dictionary [home, info]
Science (2 matching dictionaries)
- Efficacy: Biological Sciences Dictionary [home, info]
- Efficacy: Medicinal Chemistry [home, info]
Tech (5 matching dictionaries)
- Efficacy: Glossary of Lighting Terminology [home, info]
- Efficacy: Beauty & Health Glossary [home, info]
- Efficacy: Glossary of Energy Terms [home, info]
- Efficacy: Pest Management Glossary [home, info]
- Efficacy: Site Lighting Glossary [home, info]
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Quick definitions (efficacy)
▸ noun: capacity or power to produce a desired effect ("Concern about the safety and efficacy of the vaccine")
▸ Word origin
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