Part 787

<cs><col>Aurora borealis</col> <tt>(<?/)</tt>, <it>i. e.</it>, northern daybreak; popularly called <i>northern lights</i>. <cd>A luminous meteoric phenomenon, visible only at night, and supposed to be of electrical origin. This species of light usually appears in streams, ascending toward the zenith from a dusky line or bank, a few degrees above the northern horizon; when reaching south beyond the zenith, it forms what is called the <i>corona</i>, about a spot in the heavens toward which the dipping needle points. Occasionally the aurora appears as an arch of light across the heavens from east to west. Sometimes it assumes a wavy appearance, and the streams of light are then called <i>merry dancers</i>. They assume a variety of colors, from a pale red or yellow to a deep red or blood color.</cd> The <col>Aurora australis</col></mcol> (<?/) <cd>is a corresponding phenomenon in the southern hemisphere, the streams of light ascending in the same manner from near the southern horizon.</cd></cs>

<h1>Auroral</h1> <Xpage=102>

<hw>Au*ro"ral</hw> <tt>(?)</tt>, <tt>a.</tt> <def>Belonging to, or resembling, the aurora (the dawn or the northern lights); rosy.</def>

<blockquote>Her cheeks suffused with an <b>auroral</b> blush. <i>Longfellow.</i></blockquote>

<h1>Aurous</h1> <Xpage=102>

<hw>Au"rous</hw> <tt>(?)</tt>, <tt>a.</tt> <p><b>1.</b> <def>Containing gold.</def>

<p><b>2.</b> <fld>(Chem.)</fld> <def>Pertaining to, or derived from, gold; -- said of those compounds of gold in which this element has its lower valence; <as>as, <ex>aurous</ex> oxide</as>.</def>

<h1>Aurum</h1> <Xpage=102>

<hw>Au"rum</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[L.]</ety> <def>Gold.</def>

<cs><col>Aurum fulminans</col> (<?/). <cd>See <er>Fulminate</er>.</cd> -- <col>Aurum mosaicum</col> (<?/). <cd>See <er>Mosaic</er>.</cd></cs>

<h1>Auscult</h1> <Xpage=102>

<hw>Aus*cult"</hw> <tt>(?)</tt>, <tt>v. i. & t.</tt> <def>To auscultate.</def>

<h1>Auscultate</h1> <Xpage=102>

<hw>Aus"cul*tate</hw> <tt>(?)</tt>, <tt>v. i. & t.</tt> <def>To practice auscultation; to examine by auscultation.</def>

<h1>Auscultation</h1> <Xpage=102>

<hw>Aus`cul*ta"tion</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[L. <ets>ausculcatio</ets>, fr. <ets>auscultare</ets> to listen, fr. a dim. of <ets>auris</ets>, orig. <ets>ausis</ets>, ear. See <er>Auricle</er>, and cf. <er>Scout</er>, <tt>n.</tt>]</ety> <p><b>1.</b> <def>The act of listening or hearkening to.</def>

<i>Hickes.</i>

<p><b>2.</b> <fld>(Med.)</fld> <def>An examination by listening either directly with the ear (immediate auscultation) applied to parts of the body, as the abdomen; or with the stethoscope (mediate ~), in order to distinguish sounds recognized as a sign of health or of disease.</def>

<h1>Auscultator</h1> <Xpage=102>

<hw>Aus"cul*ta`tor</hw> <tt>(?)</tt>, <tt>n.</tt> <def>One who practices auscultation.</def>

<h1>Auscultatory</h1> <Xpage=102>

<hw>Aus*cul"ta*to*ry</hw> <tt>(?)</tt>, <tt>a.</tt> <def>Of or pertaining to auscultation.</def>

<i>Dunglison.</i>

<h1>Ausonian</h1> <Xpage=102>

<hw>Au*so"ni*an</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[L. <ets>Ausonia</ets>, poetic name for <ets>Italy</ets>.]</ety> <def>Italian.</def>

<i>Milton.</i>

<h1>Auspicate</h1> <Xpage=102>

<hw>Aus"pi*cate</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[L. <ets>auspicatus</ets>, p. p. of <ets>auspicari</ets> to take auspices, fr. <ets>auspex</ets> a bird seer, an augur, a contr. of <ets>avispex</ets>; <ets>avis</ets> bird + <ets>specere</ets>, <ets>spicere</ets>, to view. See <er>Aviary</er>, <er>Spy</er>.]</ety> <def>Auspicious.</def> <mark>[Obs.]</mark>