Part 145

<p><b>3.</b> <def>Having nice or quick sensibility; susceptible to slight impressions; acting keenly on the senses; sharp; keen; intense; <as>as, a man of <ex>acute</ex> eyesight, hearing, or feeling; <ex>acute</ex> pain or pleasure.</as></def>

<p><b>4.</b> <def>High, or shrill, in respect to some other sound; -- opposed to <i>grave</i> or <i>low</i>; <as>as, an <ex>acute</ex> tone or accent</as>.</def>

<p><b>5.</b> <fld>(Med.)</fld> <def>Attended with symptoms of some degree of severity, and coming speedily to a crisis; -- opposed to <i>chronic</i>; <as>as, an <ex>acute</ex> disease</as>.</def>

<cs><col>Acute angle</col> <fld>(Geom.)</fld>, <cd>an angle less than a right angle.</cd></cs>

<syn>Syn. -- Subtile; ingenious; sharp; keen; penetrating; sagacious; sharp-witted; shrewd; discerning; discriminating. See <er>Subtile</er>.</syn>

<h1>Acute</h1> <Xpage=19>

<hw>A*cute"</hw>, <tt>v. t.</tt> <def>To give an acute sound to; <as>as, he <ex>acutes</ex> his rising inflection too much</as>.</def> <mark>[R.]</mark>

<i>Walker.</i>

<h1>Acuteangled</h1> <Xpage=19>

<hw>A*cute"*an`gled</hw> <tt>(#)</tt>, <tt>a.</tt> <def>Having acute angles; <as>as, an <ex>acute</ex>-<ex>angled</ex> triangle, a triangle with every one of its angles less than a right angle</as>.</def>

<h1>Acutely</h1> <Xpage=19>

<hw>A*cute"ly</hw>, <tt>adv.</tt> <def>In an acute manner; sharply; keenly; with nice discrimination.</def>

<h1>Acuteness</h1> <Xpage=19>

<hw>A*cute"ness</hw>, <tt>n.</tt> <p><b>1.</b> <def>The quality of being acute or pointed; sharpness; <as>as, the <ex>acuteness</ex> of an angle</as>.</def>

<p><b>2.</b> <def>The faculty of nice discernment or perception; acumen; keenness; sharpness; sensitiveness; -- applied to the senses, or the understanding. By <i>acuteness</i> of feeling, we perceive small objects or slight impressions: by <i>acuteness</i> of intellect, we discern nice distinctions.</def>

<blockquote>Perhaps, also, he felt his professional <b>acuteness</b> interested in bringing it to a successful close. <i>Sir W. Scott.</i></blockquote>

<p><b>3.</b> <def>Shrillness; high pitch; -- said of sounds.</def>

<p><b>4.</b> <fld>(Med.)</fld> <def>Violence of a disease, which brings it speedily to a crisis.</def>

<syn>Syn. -- Penetration; sagacity; keenness; ingenuity; shrewdness; subtlety; sharp-wittedness.</syn>

<h1>Acutifoliate</h1> <Xpage=19>

<hw>A*cu`ti*fo"li*ate</hw> <tt>(#)</tt>, <tt>a.</tt> <ety>[L. <ets>acutus</ets> sharp + <ets>folium</ets> leaf.]</ety> <fld>(Bot.)</fld> <def>Having sharp-pointed leaves.</def>

<h1>Acutilobate</h1> <Xpage=19>

<hw>A*cu`ti*lo"bate</hw> <tt>(#)</tt>, <tt>a.</tt> <ety>[L. <ets>acutus</ets> sharp + E. <ets>lobe</ets>.]</ety> <fld>(Bot.)</fld> <def>Having acute lobes, as some leaves.</def>

<h1>Ad-</h1> <Xpage=19>

<hw>Ad-</hw> <tt>(#)</tt>. <ety>[A Latin preposition, signifying <ets>to</ets>. See <er>At</er>.]</ety> <def>As a prefix <i>ad-</i> assumes the forms <i>ac-</i>, <i>af-</i>, <i>ag-</i>, <i>al-</i>, <i>an-</i>, <i>ap-</i>, <i>ar-</i>, <i>as-</i>, <i>at-</i>, assimilating the <i>d</i> with the first letter of the word to which <i>ad-</i> is prefixed. It remains unchanged before vowels, and before <i>d</i>, <i>h</i>, <i>j</i>, <i>m</i>, <i>v</i>. Examples: <i>ad</i>duce, <i>ad</i>here, <i>ad</i>jacent, <i>ad</i>mit, <i>ad</i>vent, <i>ac</i>cord, <i>af</i>fect, <i>ag</i>gregate, <i>al</i>lude, <i>an</i>nex, <i>ap</i>pear, etc. It becomes <i>ac-</i> before <i>qu</i>, as in <i>ac</i>quiesce.</def>

<h1>Adact</h1> <Xpage=19>

<hw>Ad*act"</hw> <tt>(#)</tt>, <tt>v. t.</tt> <ety>[L. <ets>adactus</ets>, p. p. of <ets>adigere</ets>.]</ety> <def>To compel; to drive.</def> <mark>[Obs.]</mark>

<i>Fotherby.</i>