Part 1134

<h1>Bipunctate</h1> <Xpage=147>

<hw>Bi*punc"tate</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[Pref. <ets>bi-</ets> + <ets>punctate</ets>.]</ety> <def>Having two punctures, or spots.</def>

<h1>Bipunctual</h1> <Xpage=147>

<hw>Bi*punc"tu*al</hw> <tt>(?)</tt>, <tt>a.</tt> <def>Having two points.</def>

<h1>Bipupillate</h1> <Xpage=147>

<hw>Bi*pu"pil*late</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[Pref. <ets>bi-</ets> + <ets>pupil</ets> (of the eye).]</ety> <fld>(Zo\'94l.)</fld> <def>Having an eyelike spot on the wing, with two dots within it of a different color, as in some butterflies.</def>

<h1>Bipyramidal</h1> <Xpage=147>

<hw>Bi`py*ram"i*dal</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[Pref. <ets>bi-</ets> + <ets>pyramidal</ets>.]</ety> <def>Consisting of two pyramids placed base to base; having a pyramid at each of the extremities of a prism, as in quartz crystals.</def>

<h1>Biquadrate</h1> <Xpage=147>

<hw>Bi*quad"rate</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[Pref. <ets>bi-</ets> + <ets>quadrate</ets>.]</ety> <fld>(Math.)</fld> <def>The fourth power, or the square of the square. Thus 4x4=16, the square of 4, and 16x16=256, the <i>biquadrate</i> of 4.</def>

<h1>Biquadratic</h1> <Xpage=147>

<hw>Bi`quad*rat"ic</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[Pref. <ets>bi-</ets> + <ets>quadratic</ets>: cf. F. <ets>biquadratique</ets>.]</ety> <fld>(Math.)</fld> <def>Of or pertaining to the biquadrate, or fourth power.</def>

<cs><col>Biquadratic equation</col> <fld>(Alg.)</fld>, <cd>an equation of the fourth degree, or an equation in some term of which the unknown quantity is raised to the fourth power.</cd> -- <col>Biquadratic root of a number</col>, <cd>the square root of the square root of that number. Thus the square root of 81 is 9, and the square root of 9 is 3, which is the <i>biquadratic<i> root of 81. Hutton.</cd></cs>

<h1>Biquadratic</h1> <Xpage=147>

<hw>Bi`quad*rat"ic</hw>, <tt>n.</tt> <fld>(Math.)</fld> <sd>(a)</sd> <def>A biquadrate.</def> <sd>(b)</sd> <def>A biquadratic equation.</def>

<h1>Biquintile</h1> <Xpage=147>

<hw>Bi*quin"tile</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[Pref. <ets>bi-</ets> + <ets>quintile</ets>: cf. F. <ets>biquintile</ets>.]</ety> <fld>(Astron.)</fld> <def>An aspect of the planets when they are distant from each other by <i>twice the fifth</i> part of a great circle -- that is, twice 72 degrees.</def>

<h1>Biradiate, Biradiated</h1> <Xpage=147>

<hw><hw>Bi*ra"di*ate</hw> <tt>(?)</tt>, <hw>Bi*ra"di*a`ted</hw> <tt>(?)</tt>,<hw> <tt>a.</tt> <ety>[Pref. <ets>bi-</ets> + <ets>radiate</ets>.]</ety> <def>Having two rays; <as>as, a <ex>biradiate</ex> fin</as>.</def>

<h1>Biramous</h1> <Xpage=147>

<hw>Bi*ra"mous</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[Pref. <ets>bi-</ets> + <ets>ramous</ets>.]</ety> <fld>(Biol.)</fld> <def>Having, or consisting of, two branches.</def>

<h1>Birch</h1> <Xpage=147>

<hw>Birch</hw> <tt>(?)</tt>, <tt>n.</tt>; <plu>pl. <plw>Birches</plw> <tt>(#)</tt>.</plu> <ety>[OE. <ets>birche</ets>, <ets>birk</ets>, AS. <ets>birce</ets>, <ets>beorc</ets>; akin to Icel. <ets>bj\'94rk</ets>, Sw. <ets>bj\'94rk</ets>, Dan. <ets>birk</ets>, D. <ets>berk</ets>, OHG. <ets>piricha</ets>, MHG. <ets>birche</ets>, <ets>birke</ets>, G. <ets>birke</ets>, Russ. <ets>bereza</ets>, Pol. <ets>brzoza</ets>, Serv. <ets>breza</ets>, Skr. <ets>bh<?/rja</ets>. &root;254. Cf. 1st <er>Birk</er>.]</ety> <p><b>1.</b> <def>A tree of several species, constituting the genus <spn>Betula</spn>; <as>as, the white or common birch <spn>(B. alba)</spn> (also called silver birch and lady birch); the dwarf birch <spn>(B. glandulosa)</spn>; the paper or canoe birch <spn>(B. papyracea)</spn>; the yellow birch <spn>(B. lutea)</spn>; the black or cherry birch <spn>(B. lenta)</spn>.</def>

<p><b>2.</b> <def>The wood or timber of the birch.</def>

<p><b>3.</b> <def>A birch twig or birch twigs, used for flogging.</def>

<note>&hand; The twigs of the common European birch (B. alba), being tough and slender, were formerly much used for rods in schools. They were also made into brooms.</note>

<blockquote>The threatening twigs of <b>birch</b>. <i>Shak.</i></blockquote>

<p><b>4.</b> <def>A birch-bark canoe.</def>