Part 3619

<h1>Efficacious</h1> <Xpage=472>

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

<syn>Syn. -- See <er>Effectual</er>.</syn>

-- <wordforms><wf>Ef`fi*ca"cious*ly</wf>, <tt>adv.</tt> -- <wf>Ef`fi*ca"cious*ness</wf>, <tt>n.</tt></wordforms>

<h1>Efficacity</h1> <Xpage=472>

<hw>Ef`fi*cac"i*ty</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[L. <ets>efficacitas</ets>: cf. F. <ets>efficacit\'82</ets>.]</ety> <def>Efficacy.</def> <mark>[R.]</mark>

<i>J. Fryth.</i>

<h1>Efficacy</h1> <Xpage=472>

<hw>Ef"fi*ca*cy</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[L. <ets>efficacia</ets>, fr. <ets>efficax</ets>. See <er>Efficacious</er>.]</ety> <def>Power to produce effects; operation or energy of an agent or force; production of the effect intended; <as>as, the <ex>efficacy</ex> of medicine in counteracting disease; the <ex>efficacy</ex> of prayer.</as></def> "Of noxious <i>efficacy</i>."

<i>Milton.</i>

<syn>Syn. -- Virtue; force; energy; potency; efficiency.</syn>

<h1>Efficience, Efficiency</h1> <Xpage=472>

<hw><hw>Ef*fi"cience</hw> <tt>(?)</tt>, <hw>Ef*fi"cien*cy</hw> <tt>(?)</tt>,<hw> <tt>n.</tt> <ety>[L. <ets>efficientia</ets>.]</ety>

<p><b>1.</b> <def>The quality of being efficient or producing an effect or effects; efficient power; effectual agency.</def>

<blockquote>The manner of this divine <b>efficiency</b> being far above us. <i>Hooker.</i></blockquote>

<p><b>2.</b> <fld>(Mech.)</fld> <def>The ratio of useful work to energy expended.</def>

<i>Rankine.</i>

<cs><col>Efficiency of a heat engine</col>, <cd>the ratio of the work done an engine, to the work due to the heat supplied to it.</cd></cs>

<h1>Efficient</h1> <Xpage=472>

<hw>Ef*fi"cient</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[L. <ets>efficiens</ets>, <ets>-entis</ets>, p. pr. of <ets>efficere</ets> to effect: cf. F. <ets>efficient</ets>. See <er>Effect</er>, <tt>n.</tt>]</ety> <def>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>as, an <ex>efficient</ex> officer, power</as>.</def>

<blockquote>The <b>efficient</b> cause is the working cause. <i>Wilson.</i></blockquote>

<syn>Syn. -- Effective; effectual; competent; able; capable; material; potent.</syn>

<hr> <page="473"> Page 473<p>

<h1>Efficient</h1> <Xpage=473>

<hw>Ef*fi"cient</hw> <tt>(?)</tt>, <tt>n.</tt> <def>An efficient cause; a prime mover.</def>

<blockquote>God . . . moveth mere natural agents as an <b>efficient</b> only. <i>Hooker.</i></blockquote>

<h1>Efficiently</h1> <Xpage=473>

<hw>Ef*fi"cient*ly</hw>, <tt>adv.</tt> <def>With effect; effectively.</def>