Definition of efficacy

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Efficacy (n.) 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..

Lern More About Efficacy

Strong :: Strong (superl.) Having virtues of great efficacy; or, having a particular quality in a great degree; as, a strong powder or tincture; a strong decoction; strong tea or coffee..
Potency :: Potency (n.) The quality or state of being potent; physical or moral power; inherent strength; energy; ability to effect a purpose; capability; efficacy; influence.
Virtuous :: Virtuous (a.) Having power or efficacy; powerfully operative; efficacious; potent.
Degradation :: Degradation (n.) Diminution or reduction of strength, efficacy, or value; degeneration; deterioration..
Efficacy :: Efficacy (n.) 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..
Availableness :: Availableness (n.) Competent power; validity; efficacy; as, the availableness of a title..
Inefficiency :: Inefficiency (n.) The quality of being inefficient; want of power or energy sufficient; want of power or energy sufficient for the desired effect; inefficacy; incapacity; as, he was discharged from his position for inefficiency..
Virtually :: Virtually (adv.) In a virtual manner; in efficacy or effect only, and not actually; to all intents and purposes; practically..
Inefficaciously :: Inefficaciously (adv.) without efficacy or effect.
Inefficaciousness :: Inefficaciousness (n.) Want of effect, or of power to produce the effect; inefficacy..
Null :: Null (a.) Of no legal or binding force or validity; of no efficacy; invalid; void; nugatory; useless.
Virtuality :: Virtuality (n.) Potentiality; efficacy; potential existence.
Insignificance :: Insignificance (n.) Want of force or effect; unimportance; pettiness; inefficacy; as, the insignificance of human art..
Stand :: Stand (n.) To be or remain as it is; to continue in force; to have efficacy or validity; to abide.
Vain :: Vain (superl.) Destitute of forge or efficacy; effecting no purpose; fruitless; ineffectual; as, vain toil; a vain attempt..
Coefficacy :: Coefficacy (n.) Joint efficacy.
Fleabane :: Fleabane (n.) One of various plants, supposed to have efficacy in driving away fleas. They belong, for the most part, to the genera Conyza, Erigeron, and Pulicaria..
Magistery :: Magistery (n.) Mastery; powerful medical influence; renowned efficacy; a sovereign remedy.
Infringe :: Infringe (v. t.) To hinder; to destroy; as, to infringe efficacy; to infringe delight or power..
Charm :: Charm (n.) Anything worn for its supposed efficacy to the wearer in averting ill or securing good fortune.
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