Part 637

Mrs. Browning

If they find the old governments effete, worn out, . . . they may seek new ones.

Burke.

Ef`fi*ca"cious (?), a. [L. eficax, -acis, fr. efficere. See Effect, n.] Possessing the quality of being effective; productive of, or powerful to produce, the effect intended; as, an efficacious law.

Syn. -- See Effectual.

-- Ef`fi*ca"cious*ly, adv. -- Ef`fi*ca"cious*ness, n.

Ef`fi*cac"i*ty (?), n. [L. efficacitas: cf. F. efficacité.] Efficacy. [R.] J. Fryth.

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.

{ Ef*fi"cience (?), Ef*fi"cien*cy (?), } n. [L. efficientia.] 1. The quality of being efficient or producing an effect or effects; efficient power; effectual agency.

The manner of this divine efficiency being far above us.

Hooker.

2. (Mech.) The ratio of useful work to energy expended. Rankine.

Efficiency of a heat engine, the ratio of the work done by an engine, to the work due to the heat supplied to it.

Ef*fi"cient (-ent), a. [L. efficiens, -entis, p. pr. of efficere to effect: cf. F. efficient. See Effect, n.] Causing effects; producing results; that makes the effect to be what it is; actively operative; not inactive, slack, or incapable; characterized by energetic and useful activity; as, an efficient officer, power.

The efficient cause is the working cause.

Wilson.

Syn. -- Effective; effectual; competent; able; capable; material; potent.

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Ef*fi"cient (?), n. An efficient cause; a prime mover.

God . . . moveth mere natural agents as an efficient only.

Hooker.

Ef*fi"cient*ly, adv. With effect; effectively.

Ef*fierce" (?), v. t. [Pref. ex- (intens.) + fierce.] To make fierce. [Obs.] Spenser.

Ef*fig"i*al (?), a. Relating to an effigy.

Ef*fig"i*ate (?), v. t. [L. effigiatus, p. p. of effigiare to form, fr. effigies. See Effigy.] To form as an effigy; hence, to fashion; to adapt.

Jer. Taylor.

Ef*fig`i*a"tion (?), n. [Cf. LL. effigiatio.] The act of forming in resemblance; an effigy. Fuller.