Part 6328

<hw>Lac"te*ous</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[See <er>Lacteal</er>.]</ety> <p><b>1.</b> <def>Milky; resembling milk.</def> "The <i>lacteous</i> circle."

<i>Sir T. Browne.</i>

<p><b>2.</b> <def>Lacteal; conveying chyle; <as>as, <ex>lacteous</ex> vessels</as>.</def>

<h1>Lacteously</h1> <Xpage=823>

<hw>Lac"te*ous*ly</hw>, <tt>adv.</tt> <def>In a lacteous manner; after the manner of milk.</def>

<h1>Lactescence</h1> <Xpage=823>

<hw>Lac*tes"cence</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[Cf. F. <ets>lactescence</ets>.]</ety> <p><b>1.</b> <def>The state or quality of producing milk, or milklike juice; resemblance to milk; a milky color.</def>

<blockquote>This <b>lactescence</b> does commonly ensue when . . . fair water is suddenly poured upon the solution. <i>Boyle.</i></blockquote>

<p><b>2.</b> <fld>(Bot.)</fld> <def>The latex of certain plants. See <er>Latex</er>.</def>

<h1>Lactescent</h1> <Xpage=823>

<hw>Lac*tes"cent</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[L. <ets>lactescens</ets>, p. pr. of <ets>lactescere</ets> to turn to milk, incho. fr. <ets>lactere</ets> to be milky, fr. <ets>lac</ets>, <ets>lactis</ets>, milk: cf. F. <ets>lactescent</ets>.]</ety> <p><b>1.</b> <def>Having a milky look; becoming milky.</def> <mark>[Obs.]</mark>

<p><b>2.</b> <fld>(Bot.)</fld> <def>Producing milk or a milklike juice or fluid, as the milkweed. See <er>Latex</er>.</def>

<h1>Lactic</h1> <Xpage=823>

<hw>Lac"tic</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[L. <ets>lac</ets>, <ets>lactis</ets>, milk: cf. F. <ets>lactique</ets>. See <er>Lacteal</er>, and cf. <er>Galactic</er>.]</ety> <fld>(Physiol. Chem.)</fld> <def>Of or pertaining to milk; procured from sour milk or whey; <as>as, <ex>lactic</ex> acid; <ex>lactic</ex> fermentation, etc.</as></def>

<cs><col>Lactic acid</col> <fld>(Physiol. Chem.)</fld>, <cd>a sirupy, colorless fluid, soluble in water, with an intensely sour taste and strong acid reaction. There are at least three isomeric modifications all having the formula <chform>C3H6O3</chform>. <i>Sarcolactic<i> or <i>paralactic acid<i> occurs chiefly in dead muscle tissue, while <i>ordinary lactic acid<i> results from fermentation. The two acids are alike in having the same constitution (expressed by the name <i>ethylidene lactic acid<i>), but the latter is optically inactive, while sarcolactic acid rotates the plane of polarization to the right. The third acid, <i>ethylene lactic acid<i>, accompanies sarcolactic acid in the juice of flesh, and is optically inactive.</cd> -- <col>Lactic ferment</col>, <cd>an organized ferment (<spn>Bacterium lacticum &or; lactis</spn>), which produces lactic fermentation, decomposing the sugar of milk into carbonic and lactic acids, the latter, of which renders the milk sour, and precipitates the casein, thus giving rise to the so-called spontaneous coagulation of milk.</cd> -- <col>Lactic fermentation</col>. <cd>See under <er>Fermentation</er>.</cd></cs> <-- the three are D-lactic acid, L-lactic acid, and DL-lactic acid, the third being merely an equimolar mixture of the first two. -->

<h1>Lactide</h1> <Xpage=823>

<hw>Lac"tide</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[<ets>Lac</ets>tic + anhydride.]</ety> <fld>(Chem.)</fld> <def>A white, crystalline substance, obtained from also, by extension, any similar substance.</def>

<h1>Lactiferous</h1> <Xpage=823>

<hw>Lac*tif"er*ous</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[l. <ets>lac</ets>, <ets>lactis</ets>, milk + <ets>-ferous</ets>: cf. F. <ets>lactif</ets>\'8a<ets>re</ets>.]</ety> <def>Bearing or containing milk or a milky fluid; <as>as, the <ex>lactiferous</ex> vessels, cells, or tissue of various vascular plants</as>.</def>

<h1>Lactific, Lactifical</h1> <Xpage=823>

<hw><hw>Lac*tif"ic</hw> <tt>(?)</tt>, <hw>Lac*tif"ic*al</hw> <tt>(?)</tt>,<hw> <tt>a.</tt> <ety>[L. <ets>lac</ets>, <ets>lactis</ets>, milk + <ets>facere</ets> to make.]</ety> <def>Producing or yielding milk.</def>

<h1>Lactifuge</h1> <Xpage=823>

<hw>Lac"ti*fuge</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[L. <ets>lac</ets>, <ets>lactis</ets>, milk + <ets>fugare</ets> to expel.]</ety> <fld>(Med.)</fld> <def>A medicine to check the secretion of milk, or to dispel a supposed accumulation of milk in any part of the body.</def>

<h1>Lactim</h1> <Xpage=823>

<hw>Lac"tim</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[<ets>Lactic</ets> + <ets>im</ets>ido.]</ety> <fld>(Chem.)</fld> <def>One of a series of anhydrides resembling the lactams, but of an imido type; <as>as, isatine is a <ex>lactim</ex></as>. Cf. <er>Lactam</er>.</def>

<h1>Lactimide</h1> <Xpage=823>

<hw>Lac*tim"ide</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[<ets>Lactic</ets> + <ets>imide</ets>.]</ety> <fld>(Chem.)</fld> <def>A white, crystalline substance obtained as an anhydride of alanine, and regarded as an imido derivative of lactic acid.</def>

<h1>Lactin</h1> <Xpage=823>