Part 73

<hw>Ac*ced"er</hw> <tt>(#)</tt>, <tt>n.</tt> <def>One who accedes.</def>

<h1>Accelerando</h1> <Xpage=10>

<hw>Ac*cel`er*an"do</hw> <tt>(#)</tt>, <tt>a.</tt> <ety>[It.]</ety> <fld>(Mus.)</fld> <def>Gradually accelerating the movement.</def>

<h1>Accelerate</h1> <Xpage=10>

<hw>Ac*cel"er*ate</hw> <tt>(#)</tt>, <tt>v. t.</tt> <wordforms>[<tt>imp. & p. p.</tt> <er>Accelerated</er> <tt>(#)</tt>; <tt>p. pr. & vb. n.</tt> <er>Accelerating</er>.]</wordforms> <ety>[L. <ets>acceleratus</ets>, p. p. of <ets>accelerare</ets>; <ets>ad + celerare</ets> to hasten; <ets>celer</ets> quick. See <er>Celerity</er>.]</ety> <p><b>1.</b> <def>To cause to move faster; to quicken the motion of; to add to the speed of; -- opposed to <i>retard</i>.</def>

<p><b>2.</b> <def>To quicken the natural or ordinary progression or process of; <as>as, to <ex>accelerate</ex> the growth of a plant, the increase of wealth, etc.</as></def>

<p><b>3.</b> <def>To hasten, as the occurence of an event; <as>as, to <ex>accelerate</ex> our departure</as>.</def>

<cs><col>Accelerated motion</col> <fld>(Mech.)</fld>, <cd>motion with a continually increasing velocity.</cd> -- <col>Accelerating force</col>, <cd>the force which causes accelerated motion.</cd></cs>

<i>Nichol.</i></blockquote>

<syn>Syn. -- To hasten; expedite; quicken; dispatch; forward; advance; further.</syn>

<h1>Acceleration</h1> <Xpage=10>

<hw>Ac*cel`er*a"tion</hw> <tt>(#)</tt>, <tt>n.</tt> <ety>[L. <ets>acceleratio</ets>: cf. F. <ets>acc\'82l\'82ration</ets>.]</ety> <def>The act of accelerating, or the state of being accelerated; increase of motion or action; <as>as, a falling body moves toward the earth with an <ex>acceleration</ex> of velocity</as>; -- opposed to <contr>retardation</contr>.</def>

<blockquote>A period of social improvement, or of intellectual advancement, contains within itself a principle of <b>acceleration</b>. <i>I. Taylor.</i></blockquote>

<cs><fld>(Astr. & Physics.)</fld> <col>Acceleration of the moon</col>, <cd>the increase of the moon's mean motion in its orbit, in consequence of which its period of revolution is now shorter than in ancient times.</cd> -- <mcol><col>Acceleration</col> and <col>retardation of the tides</col></mcol>. <cd>See <cref>Priming of the tides</cref>, under <er>Priming</er>.</cd> -- <col>Diurnal acceleration of the fixed stars</col>, <cd>the amount by which their apparent diurnal motion exceeds that of the sun, in consequence of which they daily come to the meridian of any place about three minutes fifty-six seconds of solar time earlier than on the day preceding.</cd> -- <col>Acceleration of the planets</col>, <cd>the increasing velocity of their motion, in proceeding from the apogee to the perigee of their orbits.</cd></cs>

<h1>Accelerative</h1> <Xpage=10>

<hw>Ac*cel"er*a*tive</hw> <tt>(#)</tt>, <tt>a.</tt> <def>Relating to acceleration; adding to velocity; quickening.</def>

<i>Reid.</i>

<h1>Accelerator</h1> <Xpage=10>

<hw>Ac*cel"er*a`tor</hw> <tt>(#)</tt>, <tt>n.</tt> <def>One who, or that which, accelerates. Also as an <i>adj</i>.; <as>as, <ex>accelerator</ex> nerves</as>.</def>

<h1>Acceleratory</h1> <Xpage=10>

<hw>Ac*cel"er*a*to*ry</hw> <tt>(#)</tt>, <tt>a.</tt> <def>Accelerative.</def>

<h1>Accelerograph</h1> <Xpage=10>

<hw>Ac*cel"er*o*graph</hw> <tt>(#)</tt>, <tt>n.</tt> <ety>[<ets>Acceler</ets>ate + <ets>-graph</ets>.]</ety> <fld>(Mil.)</fld> <def>An apparatus for studying the combustion of powder in guns, etc.</def>

<h1>Accelerometer</h1> <Xpage=10>

<hw>Ac*cel`er*om"e*ter</hw> <tt>(#)</tt>, <tt>n.</tt> <ety>[<ets>Acceler</ets>ate + <ets>-meter</ets>.]</ety> <def>An apparatus for measuring the velocity imparted by gunpowder.</def>

<h1>Accend</h1> <Xpage=10>

<hw>Ac*cend"</hw> <tt>(#)</tt>, <tt>v. t.</tt> <ety>[L. <ets>accendere</ets>, <ets>accensum</ets>, to kindle; <ets>ad + cand\'cbre</ets> to kindle (only in compounds); rel. to <ets>cand\'c7re</ets> to be white, to gleam. See <er>Candle</er>.]</ety> <def>To set on fire; to kindle.</def> <mark>[Obs.]</mark>

<i>Fotherby.</i>