Part 5501

<hw>Hyp"o*gyn</hw> <tt>(?)</tt>, <tt>n.</tt> <fld>(Bot.)</fld> <def>An hypogynous plant.</def>

<h1>Hypogynous</h1> <Xpage=721>

<hw>Hy*pog"y*nous</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[Pref. <ets>hypo-</ets> + Gr. <?/ woman, female: cf. F. <ets>hypogyne</ets>.]</ety> <fld>(Bot.)</fld> <def>Inserted below the pistil or pistils; -- said of sepals, petals, and stamens; having the sepals, petals, and stamens inserted below the pistil; -- said of a flower or a plant.</def>

<i>Gray.</i>

<h1>Hypohyal</h1> <Xpage=721>

<hw>Hy`po*hy"al</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[Pref. <ets>hypo-</ets> + Greek letter <?/.]</ety> <fld>(Anat.)</fld> <def>Pertaining to one or more small elements in the hyoidean arch of fishes, between the caratohyal and urohyal.</def> -- <def2><tt>n.</tt> <def>One of the hypohyal bones or cartilages.</def></def2>

<h1>Hyponastic</h1> <Xpage=721>

<hw>Hy`po*nas"tic</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[Pref. <ets>hypo-</ets> + Gr. <?/ pressed close.]</ety> <fld>(Bot.)</fld> <def>Exhibiting a downward convexity caused by unequal growth. Cf. <er>Epinastic</er>.</def>

<h1>Hyponasty</h1> <Xpage=721>

<hw>Hy`po*nas"ty</hw> <tt>(?)</tt>, <tt>n.</tt> <fld>(Bot.)</fld> <def>Downward convexity, or convexity of the inferior surface.</def>

<h1>Hyponitrite</h1> <Xpage=721>

<hw>Hy`po*ni"trite</hw> <tt>(?)</tt>, <tt>n.</tt> <fld>(Chem.)</fld> <def>A salt of hyponitrous acid.</def>

<h1>Hyponitrous</h1> <Xpage=721>

<hw>Hy`po*ni"trous</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[Pref. <ets>hypo-</ets> + <ets>nitrous</ets>.]</ety> <fld>(Chem.)</fld> <def>Containing or derived from nitrogen having a lower valence than in nitrous compounds.</def>

<cs><col>Hyponitrous acid</col> <fld>(Chem.)</fld>, <cd>an unstable nitrogen acid, <chform>NOH</chform>, whose salts are produced by reduction of the nitrates, although the acid itself is not isolated in the free state except as a solution in water; -- called also <altname>nitrosylic acid</altname>.</cd></cs>

<h1>Hypopharynx</h1> <Xpage=721>

<hw>Hy`po*phar"ynx</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[NL. See <er>Hypo-</er>, and <er>Pharynx</er>.]</ety> <fld>(Zo\'94l.)</fld> <def>An appendage or fold on the lower side of the pharynx, in certain insects.</def>

<h1>Hypophosphate</h1> <Xpage=721>

<hw>Hy`po*phos"phate</hw> <tt>(?)</tt>, <tt>n.</tt> <fld>(Chem.)</fld> <def>A salt of hypophosphoric acid.</def>

<h1>Hypophosphite</h1> <Xpage=721>

<hw>Hy`po*phos"phite</hw> <tt>(?)</tt>, <tt>n.</tt> <fld>(Chem.)</fld> <def>A salt of hypophosphorous acid.</def>

<h1>Hypophosphoric</h1> <Xpage=721>

<hw>Hy`po*phos*phor"ic</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[Pref. <ets>hypo-</ets> + <ets>phosphoric</ets>.]</ety> <fld>(Chem.)</fld> <def>Pertaining to, or derived from, or containing, phosphorus in a lower state of oxidation than in phosphoric compounds; <as>as, <ex>hypophosphoric</ex> acid</as>.</def>

<cs><col>Hypophosphoric acid</col> <fld>(Chem.)</fld>, <cd>an acid, <chform>P2H4O6</chform>, produced by the slow oxidation of moist phosphorus, and isolated only as a solution in water. It is regarded as a condensation product of one molecule of phosphoric acid with one of phosphorous acid, by partial dehydration.</cd></cs>

<h1>Hypophosphorous</h1> <Xpage=721>

<hw>Hy`po*phos"phor*ous</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[Pref. <ets>hypo-</ets> + <ets>phosphorous</ets>.]</ety> <fld>(Chem.)</fld> <def>Pertaining to, or containing, phosphorus in a lower state of oxidation than in phosphoric compounds; <as>as, <ex>hypophosphorous</ex> acid</as>.</def>

<cs><col>Hypophosphorous acid</col> <fld>(Chem.)</fld> <cd>, an acid, <chform>H3PO2</chform>, whose salts are produced by the action of barium hygrate on phosphorus. It may be obtained from its water solution, by exaporation and freezing, as a white crystalline substance. It is a powerful reducing agent.</cd></cs>

<h1>Hypophyllous</h1> <Xpage=721>