Part 3076

<p><b>2.</b> <def>A particle or atom endowed with the vital principle.</def>

<blockquote>The individual is nothing. He is no more than the <b>diatom</b>, the bit of protoplasm. <i>Mrs. E. Lynn Linton.</i></blockquote>

<h1>Diatomic</h1> <Xpage=407>

<hw>Di`a*tom"ic</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[Pref. <ets>di-</ets> + <ets>atomic</ets>.]</ety> <fld>(Chem.)</fld> <sd>(a)</sd> <def>Containing two atoms.</def> <sd>(b)</sd> <def>Having two replaceable atoms or radicals.</def>

<h1>Diatomous</h1> <Xpage=407>

<hw>Di*at"o*mous</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[Gr. <?/ cut through, fr. <?/ to cut through; <?/ through + <?/ to cut. Cf. <er>Diatom</er>.]</ety> <fld>(Min.)</fld> <def>Having a single, distinct, diagonal cleavage; -- said of crystals.</def>

<i>Mohs.</i>

<h1>Diatonic</h1> <Xpage=407>

<hw>Di`a*ton"ic</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[L. <ets>diatonicus</ets>, <ets>diatonus</ets>, Gr. <?/, <?/, fr. <?/ to stretch out; <?/ through + <?/ to stretch: cf. F. <ets>diatonique</ets>. See <er>Tone</er>.]</ety> <fld>(Mus.)</fld> <def>Pertaining to the scale of eight tones, the eighth of which is the octave of the first.</def>

<cs><col>Diatonic scale</col> <fld>(Mus.)</fld>, <cd>a scale consisting of eight sounds with seven intervals, of which two are semitones and five are whole tones; a modern major or minor scale, as distinguished from the <i>chromatic<i> scale.</cd></cs>

<h1>Diatonically</h1> <Xpage=407>

<hw>Di`a*ton"ic*al*ly</hw> <tt>(?)</tt>, <tt>adv.</tt> <def>In a diatonic manner.</def>

<h1>Diatribe</h1> <Xpage=407>

<hw>Di"a*tribe</hw> <tt>(?; 277)</tt>, <tt>n.</tt> <ety>[L. <ets>diatriba</ets> a learned discussion, Gr. <?/, prop., a wearing away of time, fr. <?/ to rub away, spend time; <?/ through + <?/ to rub: cf. L. <ets>terere</ets>, F. <ets>trite</ets>: cf. F. <ets>diatribe</ets>.]</ety> <def>A prolonged or exhaustive discussion; especially, an acrimonious or invective harangue; a strain of abusive or railing language; a philippic.</def>

<blockquote>The ephemeral <b>diatribe</b> of a faction. <i>John Morley.</i></blockquote>

<h1>Diatribist</h1> <Xpage=407>

<hw>Di*at"ri*bist</hw> <tt>(?)</tt>, <tt>n.</tt> <def>One who makes a diatribe or diatribes.</def>

<h1>Diatryma</h1> <Xpage=407>

<hw>Di`a*try"ma</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[NL., from Gr. <?/ through + <?/ hole.]</ety> <fld>(Paleon.)</fld> <def>An extinct eocene bird from New Mexico, larger than the ostrich.</def>

<h1>Diazeuctic, Diazeutic</h1> <Xpage=407>

<hw><hw>Di`a*zeuc"tic</hw> <tt>(?)</tt>, <hw>Di`a*zeu"tic</hw> <tt>(?)</tt>,<hw> <tt>a.</tt> <ety>[Gr. <?/ disjunctive, fr. <?/ to disjoin; <?/ through, asunder + <?/ to join, yoke.]</ety> <fld>(Anc. Mus.)</fld> <def>Disjoining two fourths; <as>as, the <ex>diazeutic</ex> tone, which, like that from F to G in modern music, lay between two fourths, and, being joined to either, made a fifth</as>.</def> <mark>[Obs.]</mark>

<h1>Diazo-</h1> <Xpage=407>

<hw>Di*az"o-</hw> <tt>(<?/)</tt>. <ety>[Pref. <ets>di-</ets> + <ets>azo-</ets>]</ety> <fld>(Chem.)</fld> <def>A combining form (also used adjectively), meaning <i>pertaining to</i>, or <i>derived from</i>, a series of compounds containing a radical of <i>two nitrogen atoms</i>, united usually to an aromatic radical; <as>as, <ex>diazo-</ex>benzene, <chform>C6H5.N2.OH</chform></as>.</def>

<note>&hand; <i>Diazo compounds</i> are in general unstable, but are of great importance in recent organic chemistry. They are obtained by a partial reduction of the salts of certain amido compounds.</note>

<cs><col>Diazo reactions</col> <fld>(Chem.)</fld>, <cd>a series of reactions whereby diazo compounds are employed in substitution. These reactions are of great importance in organic chemistry.</cd></cs>

<h1>Diazotize</h1> <Xpage=407>

<hw>Di*az"o*tize</hw> <tt>(?)</tt>, <tt>v. t.</tt> <fld>(Chem.)</fld> <def>To subject to such reactions or processes that diazo compounds, or their derivatives, shall be produced by chemical exchange or substitution.</def>

<h1>Dib</h1> <Xpage=407>