Part 921

<h1>Barnacle</h1> <Xpage=120>

<hw>Bar"na*cle</hw>, <tt>n.</tt> <ety>[See <er>Bernicle</er>.]</ety> <def>A bernicle goose.</def>

<h1>Barnacle</h1> <Xpage=120>

<hw>Bar"na*cle</hw>, <tt>n.</tt> <ety>[OE. <ets>bernak</ets>, <ets>bernacle</ets>; cf. OF. <ets>bernac</ets>, and Prov. F. (Berri) <ets>berniques</ets>, spectacles.]</ety> <p><b>1.</b> <pluf>pl.</pluf> <fld>(Far.)</fld> <def>An instrument for pinching a horse's nose, and thus restraining him.</def> <note>[Formerly used in the <tt>sing.</tt>]</note>

<blockquote>The <b>barnacles</b> . . . give pain almost equal to that of the switch. <i>Youatt.</i></blockquote>

<p><b>2.</b> <pluf>pl.</pluf> <def>Spectacles; -- so called from their resemblance to the barnacles used by farriers.</def> <mark>[Cant, Eng.]</mark>

<i>Dickens.</i>

<h1>Barnyard</h1> <Xpage=120>

<hw>Barn"yard`</hw> <tt>(?)</tt>, <tt>n.</tt> <def>A yard belonging to a barn.</def>

<h1>Barocco</h1> <Xpage=120>

<hw>Ba*roc"co</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[It.]</ety> <fld>(Arch.)</fld> <def>See <er>Baroque</er>.</def>

<h1>Barograph</h1> <Xpage=120>

<hw>Bar"o*graph</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[Gr.<ets><?/</ets> weight + <ets>-graph</ets>.]</ety> <fld>(Meteor.)</fld> <def>An instrument for recording automatically the variations of atmospheric pressure.</def>

<h1>Baroko</h1> <Xpage=120>

<hw>Ba*ro"ko</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[A mnemonic word.]</ety> <fld>(Logic)</fld> <def>A form or mode of syllogism of which the first proposition is a universal affirmative, and the other two are particular negative.</def>

<h1>Barology</h1> <Xpage=120>

<hw>Ba*rol"o*gy</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[Gr. <ets><?/</ets> weight + <ets>-logy</ets>.]</ety> <def>The science of weight or gravity.</def>

<h1>Baromacrometer</h1> <Xpage=120>

<hw>Bar`o*ma*crom"e*ter</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[Gr. <ets><?/</ets> weight + <ets><?/</ets> long + <ets>-meter</ets>.]</ety> <fld>(Med.)</fld> <def>An instrument for ascertaining the weight and length of a newborn infant.</def>

<h1>Barometer</h1> <Xpage=120>

<hw>Ba*rom"e*ter</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[Gr. <ets><?/</ets> weight + <ets>-meter</ets>: cf. F. <ets>barom\'8atre</ets>.]</ety> <def>An instrument for determining the weight or pressure of the atmosphere, and hence for judging of the probable changes of weather, or for ascertaining the height of any ascent.</def>

<note>&hand; The barometer was invented by Torricelli at Florence about 1643. It is made in its simplest form by filling a graduated glass tube about 34 inches long with mercury and inverting it in a cup containing mercury. The column of mercury in the tube descends until balanced by the weight of the atmosphere, and its rise or fall under varying conditions is a measure of the change in the atmospheric pressure. At the sea level its ordinary height is about 30 inches (760 millimeters). See <er>Sympiesometer</er>.</note>

<i>Nichol.</i>

<cs><col>Aneroid barometer</col>. <cd>See <i>Aneroid barometer<i>, under <er>Aneroid</er>.</cd> -- <col>Marine barometer</col>, <cd>a barometer with tube contracted at bottom to prevent rapid oscillations of the mercury, and suspended in gimbals from an arm or support on shipboard.</cd> -- <col>Mountain barometer</col>, <cd>a portable mercurial barometer with tripod support, and long scale, for measuring heights.</cd> -- <col>Siphon barometer</col>, <cd>a barometer having a tube bent like a hook with the longer leg closed at the top. The height of the mercury in the longer leg shows the pressure of the atmosphere.</cd> -- <col>Wheel barometer</col>, <cd>a barometer with recurved tube, and a float, from which a cord passes over a pulley and moves an index.</cd></cs>

<h1>Barometric, Barometrical</h1> <Xpage=120>

<hw><hw>Bar`o*met"ric</hw> <tt>(?)</tt>, <hw>Bar`o*met"ric*al</hw> <tt>(?)</tt>,<hw> <tt>a.</tt> <def>Pertaining to the barometer; made or indicated by a barometer; <as>as, <ex>barometric</ex> changes; <ex>barometrical</ex> observations.</as></def>

<h1>Barometrically</h1> <Xpage=120>

<hw>Bar`o*met"ric*al*ly</hw>, <tt>adv.</tt> <def>By means of a barometer, or according to barometric observations.</def>