Part 593

<i>Wyatt.</i>

<h1>Araceous</h1> <Xpage=76>

<hw>A*ra"ceous</hw> <tt>(#)</tt>, <tt>a.</tt> <ety>[L. <ets>arum</ets> a genus of plants, fr. Gr. <?/.]</ety> <fld>(Bot.)</fld> <def>Of or pertaining to an order of plants, of which the genus <spn>Arum</spn> is the type.</def>

<h1>Arachnid</h1> <Xpage=76>

<hw>A*rach"nid</hw> <tt>(#)</tt>, <tt>n.</tt> <def>An arachnidan.</def>

<i>Huxley.</i>

<h1>Arachnida</h1> <Xpage=76>

<hw>A*rach"ni*da</hw> <tt>(#)</tt>, <tt>n. pl.</tt> <ety>[NL., fr. Gr. <?/ spider.]</ety> <fld>(Zo\'94l.)</fld> <def>One of the classes of Arthropoda. See <i>Illustration</i> in Appendix.</def>

<note>&hand; They have four pairs of legs, no antenn\'91 nor wings, a pair of mandibles, and one pair of maxill\'91 or palpi. The head is usually consolidated with the thorax. The respiration is either by tranche\'91 or by pulmonary sacs, or by both. The class includes three principal orders: <stype><spn>Araneina</spn></stype>, or spiders; <stype><spn>Arthrogastra</spn></stype>, including scorpions, etc.; and <stype><spn>Acarina</spn></stype>, or mites and ticks.</note>

<h1>Arachnidan</h1> <Xpage=76>

<hw>A*rach"ni*dan</hw> <tt>(#)</tt>, <tt>n.</tt> <ety>[Gr. <?/ spider.]</ety> <fld>(Zo\'94l.)</fld> <def>One of the Arachnida.</def>

<h1>Arachnidial</h1> <Xpage=76>

<hw>Ar`ach*nid"i*al</hw> <tt>(#)</tt>, <tt>a.</tt> <fld>(Zo\'94l.)</fld> <sd>(a)</sd> <def>Of or pertaining to the Arachnida.</def> <sd>(b)</sd> <def>Pertaining to the arachnidium.</def>

<h1>Arachnidium</h1> <Xpage=76>

<hw>Ar`ach*nid"i*um</hw> <tt>(#)</tt>, <tt>n.</tt> <ety>[NL. See <er>Arachnida</er>.]</ety> <fld>(Zo\'94l.)</fld> <def>The glandular organ in which the material for the web of spiders is secreted.</def>

<h1>Arachnitis</h1> <Xpage=76>

<hw>Ar`ach*ni"tis</hw> <tt>(#)</tt>, <tt>n.</tt> <ety>[Gr. <?/ + <?/.]</ety> <fld>(Med.)</fld> <def>Inflammation of the arachnoid membrane.</def>

<h1>Arachnoid</h1> <Xpage=76>

<hw>A*rach"noid</hw> <tt>(#)</tt>, <tt>a.</tt> <ety>[Gr. <?/ like a cobweb; <?/ spider, spider's web + <?/ form.]</ety> <p><b>1.</b> <def>Resembling a spider's web; cobweblike.</def>

<p><b>2.</b> <fld>(Anat.)</fld> <def>Pertaining to a thin membrane of the brain and spinal cord, between the dura mater and pia mater.</def>

<p><b>3.</b> <fld>(Bot.)</fld> <def>Covered with, or composed of, soft, loose hairs or fibers, so as to resemble a cobweb; cobwebby.</def>

<h1>Arachnoid</h1> <Xpage=76>

<hw>A*rach"noid</hw>, <tt>n.</tt> <p><b>1.</b> <fld>(Anat.)</fld> <def>The arachnoid membrane.</def>

<p><b>2.</b> <fld>(Zo\'94l.)</fld> <def>One of the Arachnoidea.</def>

<h1>Arachnoidal</h1> <Xpage=76>

<hw>Ar`ach*noid"al</hw> <tt>(#)</tt>, <tt>a.</tt> <fld>(Anat.)</fld> <def>Pertaining to the arachnoid membrane; arachnoid.</def>

<h1>Arachnoidea</h1> <Xpage=76>

<hw>Ar`ach*noid"e*a</hw> <tt>(#)</tt>, <tt>n. pl.</tt> <ety>[NL.]</ety> <fld>(Zo\'94l.)</fld> <def>Same as <er>Arachnida</er>.</def>