Part 5280

<h1>Hexicology</h1> <Xpage=691>

<hw>Hex`i*col"ogy</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[Gr. <?/ state or habit + <ets>-logy</ets>.]</ety> <def>The science which treats of the complex relations of living creatures to other organisms, and to their surrounding conditions generally.</def> <-- = ecology -->

<i>St. George Mivart.</i>

<h1>Hexine</h1> <Xpage=691>

<hw>Hex"ine</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[Gr. <grk>"e`x</grk> six.]</ety> <fld>(Chem.)</fld> <def>A hydrocarbon, <chform>C6H10</chform>, of the acetylene series, obtained artificially as a colorless, volatile, pungent liquid; -- called also <altname>hexoylene</altname>.</def>

<h1>Hexoctahedron</h1> <Xpage=691>

<hw>Hex*oc`ta*he"dron</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[<ets>Hex-</ets> + <ets>octahedron</ets>.]</ety> <fld>(Geom.)</fld> <def>A solid having forty-eight equal triangular faces.</def>

<h1>Hexoic</h1> <Xpage=691>

<hw>Hex*o"ic</hw> <tt>(?)</tt>, <tt>a.</tt> <fld>(Chem.)</fld> <def>Pertaining to, or derived from, hexane; <as>as, <ex>hexoic</ex> acid</as>.</def>

<h1>Hexone</h1> <Xpage=691>

<hw>Hex"one</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[<ets>Hex-</ets> + <ets>-one</ets>.]</ety> <fld>(Chem.)</fld> <def>A liquid hydrocarbon, <chform>C6H8</chform>, of the valylene series, obtained from distillation products of certain fats and gums.</def>

<h1>Hexyl</h1> <Xpage=691>

<hw>Hex"yl</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[<ets>Hex-</ets> + <ets>-yl</ets>.]</ety> <fld>(chem.)</fld> <def>A compound radical, <chform>C6H13</chform>, regarded as the essential residue of <i>hexane</i>, and a related series of compounds.</def>

<h1>Hexylene</h1> <Xpage=691>

<hw>Hex"yl*ene</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[<ets>Hex-</ets> + <ets>-yl</ets> + ethl<ets>ene</ets>.]</ety> <fld>(Chem.)</fld> <def>A colorless, liquid hydrocarbon, <chform>C6H12</chform>, of the ethylene series, produced artificially, and found as a natural product of distillation of certain coals; also, any one several isomers of hexylene proper. Called also <altname>hexene</altname>.</def>

<h1>Hexylic</h1> <Xpage=691>

<hw>Hex*yl"ic</hw> <tt>(?)</tt>, <tt>a.</tt> <fld>(chem.)</fld> <def>Pertaining to, or derived from, hexyl or hexane; <as>as, <ex>hexylic</ex> alcohol</as>.</def>

<h1>Hey</h1> <Xpage=691>

<hw>Hey</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[See <er>High</er>.]</ety> <def>High.</def> <mark>[Obs.]</mark>

<i>Chaucer.</i>

<h1>Hey</h1> <Xpage=691>

<hw>Hey</hw> <tt>(?)</tt>, <tt>interj.</tt> <ety>[OE. <ets>hei</ets>; cf. D. & G. <ets>hei</ets>.]</ety> <p><b>1.</b> <def>An exclamation of joy, surprise, or encouragement.</def>

<i>Shak.</i>

<p><b>2.</b> <def>A cry to set dogs on.</def>

<i>Shak.</i>

<h1>Heyday</h1> <Xpage=691>

<hw>Hey"day`</hw> <tt>(?)</tt>, <tt>interj.</tt> <ety>[Cf. G. <ets>heida</ets>, or <ets>hei da</ets>, D. <ets>hei daar</ets>. Cf. <er>Hey</er>, and <er>There</er>.]</ety> <def>An expression of frolic and exultation, and sometimes of wonder.</def>

<i>B. Jonson.</i>