Related Searches
on Ask.com
Synonyms
efficacy - 4 dictionary results
ef⋅fi⋅ca⋅cy
[ef-i-kuh-see] 
ɪ
–noun, plural -cies.
| capacity for producing a desired result or effect; effectiveness: a remedy of great efficacy. |
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source
|
Link To efficacy
| ef·fi·ca·cy (ěf'ĭ-kə-sē) n. Power or capacity to produce a desired effect; effectiveness. [Latin efficācia, from efficāx, efficāc-, efficacious; see efficacious.] |
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Efficacy
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.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
Cite This Source
Cite This Source
efficacy
1527, from L. efficacia, from efficax (gen. efficacis) "effective," from efficere "work out, accomplish" (see effect).
Online Etymology Dictionary, © 2001 Douglas Harper
Cite This Source
Cite This Source
Copyright © 2009, Dictionary.com, LLC. All rights reserved.
