Part 5465

<h1>Hydracid</h1> <Xpage=715>

<hw>Hy*drac"id</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[<ets>Hydr-</ets> + <ets>acid</ets>: cf. F. <ets>hydracide</ets>.]</ety> <fld>(Chem.)</fld> <def>An acid containing hydrogen; -- sometimes applied to distinguish acids like hydrochloric, hydrofluoric, and the like, which contain no oxygen, from the oxygen acids or oxacids. See <er>Acid</er>.</def>

<h1>Hydracrylic</h1> <Xpage=715>

<hw>Hy`dra*cryl"ic</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[<ets>Hydr-</ets> + <ets>acrylic</ets>.]</ety> <fld>(Chem.)</fld> <def>Pertaining to, or designating, an isomeric variety of lastic acid that breaks down into acrylic acid and water.</def>

<h1>Hydractinian</h1> <Xpage=715>

<hw>Hy`drac*tin"i*an</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[See <er>Hydra</er>, and <er>Actinia</er>.]</ety> <fld>(Zo\'94l.)</fld> <def>Any species or marine hydroids, of the genus <spn>Hydractinia</spn> and allied genera. These hydroids form, by their rootstalks, a firm, chitinous coating on shells and stones, and esp. on spiral shells occupied by hermit crabs. See <i>Illust</i>. of <er>Athecata</er>.</def>

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<h1>Hydr\'91mia</h1> <Xpage=716>

<hw>Hy*dr\'91"mi*a</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[NL., fr. Gr. <grk>"y`dwr</grk> water + <?/ blood.]</ety> <fld>(Med.)</fld> <def>An abnormally watery state of the blood; an\'91mia.</def>

<h1>Hydragogue</h1> <Xpage=716>

<hw>Hy"dra*gogue</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[L. <ets>hydragogus</ets> conveying off water, Gr. <?/; <grk>"y`dwr</grk> water + <?/ to lead: cf. F. <ets>hydragogue</ets>.]</ety> <fld>(Med.)</fld> <def>Causing a discharge of water; expelling serum effused into any part of the body, as in dropsy.</def> -- <def2><tt>n.</tt> <def>A hydragogue medicine, usually a cathartic or diuretic.</def></def2>

<h1>Hydramide</h1> <Xpage=716>

<hw>Hy*dram"ide</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[<ets>Hydr-</ets> + -<ets>amide</ets>.]</ety> <fld>(Chem.)</fld> <def>One of a group of crystalline bodies produced by the action of ammonia on certain aldehydes.</def>

<h1>Hydramine</h1> <Xpage=716>

<hw>Hy*dram"ine</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[<ets>Hydr</ets>oxyl + <ets>amine</ets>.]</ety> <fld>(Chem.)</fld> <def>One of a series of artificial, organic bases, usually produced as thick viscous liquids by the action of ammonia on ethylene oxide. They have the properties both of alcohol and amines.</def>

<h1>Hydrangea</h1> <Xpage=716>

<hw>Hy*dran"ge*a</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[NL., fr. Gr. <grk>"y`dwr</grk> water + <?/ vessel, capsule: cf. F. <ets>hydrang\'82e</ets>.]</ety> <fld>(Bot.)</fld> <def>A genus of shrubby plants bearing opposite leaves and large heads of showy flowers, white, or of various colors. <spn>H. hortensis</spn>, the common garden species, is a native of China or Japan.</def>

<h1>Hydrant</h1> <Xpage=716>

<hw>Hy"drant</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[Gr. <?/ to irrigate, fr. <grk>"y`dwr</grk> water. See <er>Hydra</er>.]</ety> <def>A discharge pipe with a valve and spout at which water may be drawn from the mains of waterworks; a water plug.</def>

<h1>Hydranth</h1> <Xpage=716>

<hw>Hy"dranth</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[<ets>Hydra</ets> + Gr. <?/ a flower.]</ety> <fld>(Zo\'94l.)</fld> <def>One of the nutritive zooids of a hydroid colony. Also applied to the proboscis or manubrium of a hydroid medusa. See <i>Illust</i>. of <er>Hydroidea</er>.</def>

<h1>Hydrargochloride</h1> <Xpage=716>

<hw>Hy*drar"go*chlo"ride</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[<ets>Hydrarg</ets>yrum + <ets>chloride</ets>.]</ety> <fld>(Chem.)</fld> <def>A compound of the bichloride of mercury with another chloride.</def> <mark>[Obs.]</mark>

<h1>Hydrargyrate</h1> <Xpage=716>

<hw>Hy*drar"gy*rate</hw> <tt>(?)</tt>, <tt>a.</tt> <def>Of or pertaining to mercury; containing, or impregnated with, mercury.</def> <mark>[R.]</mark>

<h1>Hydrargyrism</h1> <Xpage=716>

<hw>Hy*drar"gy*rism</hw> <tt>(?)</tt>, <tt>n.</tt> <fld>(Med.)</fld> <def>A diseased condition produced by poisoning with hydrargyrum, or mercury; mercurialism.</def>

<h1>Hydrargyrum</h1> <Xpage=716>