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cts; 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.

Joint efficacy.

er effect; inefficiency; ineffectualness; futility; uselessness; fruitlessness; as, the inefficacy of medicines or means. The seeming inefficacy of censures. Bp. Hall. The inefficacy was soon proved, like that of many similar medicines. James Gregory.

receiving others and in conversation; complaisant behavior. Affability is of a wonderful efficacy or power in procuring love. Elyot

To be of use or advantage; to answer the purpose; to have strength, force, or efficacy sufficient to accomplish the object; as, the plea in bar must avail, that is, be sufficient to defeat the suit; this scheme will not avail; medicines will not avail to check the disease. "What signs avail " Milton. Words avail very l…

Having sufficient power, force, or efficacy, for the object; effectual; valid; as, an available plea. [Obs.] Laws human are available by consent. Hooker.

Competent power; validity; efficacy; as, the availableness of a title. [Obs.]

Anything worn for its supposed efficacy to the wearer in averting ill or securing good fortune.

Diminution or reduction of strength, efficacy, or value; degeneration; deterioration. The development and degradation of the alphabetic forms can be traced. I. Taylor (The Alphabet).

Efficacy. [R.] J. Fryth.

t time only. "Ephemeral popularity." V. Knox. Sentences not of ephemeral, but of eternal, efficacy. Sir J. Stephen. Ephemeral fly (Zoöl.), one of a group of neuropterous insects, belonging to the genus Ephemera and many allied genera, which live in the adult or winged state only for a short time. The larvæ are aquatic;…

at which is extracted; extract; essence. They [books] do preserve as in a vial the purest efficacy and extraction of that living intellect that bred them. Milton. The extraction of roots. (Math.) (a) The operation of finding the root of a given number or quantity. (b) The method or rule by which the operation is perfor…

Efficacy; force; value. [Scot. & Prov. Eng.]

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.

Validity; efficacy. Burrill.

h writing with specific solemnities (varying in the several statutes) is required to give efficacy to certain dispositions of property. Wharton.

-- To go for nothing, to be parted with for no compensation or result; to have no value, efficacy, or influence; to count for nothing. -- To go forth. (a) To depart from a place. (b) To be divulged or made generally known; to emanate. The law shall go forth of Zion, and the word of the Lord from Jerusalem. Micah iv.…

sufficient; defectiveness; insufficiency; inadequateness. The inadequacy and consequent inefficacy of the alleged causes. Dr. T. Dwight.

Want of effect, or of power to produce it; inefficacy. The ineffectualness of some men's devotion. Wake.

without efficacy or effect.