Part 3599

<p><b>2.</b> <fld>(Lat. Pros.)</fld> <def>The elision of a final <i>m</i>, with the preceding vowel, before a word beginning with a vowel.</def>

<h1>Ecthoreum</h1> <Xpage=470>

<hw>Ec`tho*re"um</hw> <tt>(?)</tt>, <tt>n.</tt>; <plu>pl. <plw>Ecthorea</plw> <tt>(#)</tt></plu>. <ety>[NL., fr. Gr. <?/ to leap out; <?/ out + <?/, <?/, to leap, dart.]</ety> <fld>(Zo\'94l.)</fld> <def>The slender, hollow thread of a nettling cell or cnida. See <er>Nettling cell</er>.</def> <altsp>[Written also <asp>ecthor\'91um</asp>.]</altsp>

<h1>Ecthyma</h1> <Xpage=470>

<hw>Ec*thy"ma</hw> <tt>(?)</tt>, <tt>n.</tt>; <plu>pl. <plw>Ecthymata</plw> <tt>(#)</tt></plu>. <ety>[NL., fr. Gr. <?/ pimple, fr. <?/ to break out.]</ety> <fld>(Med.)</fld> <def>A cutaneous eruption, consisting of large, round pustules, upon an indurated and inflamed base.</def>

<i>Dunglison.</i>

<h1>Ecto-</h1> <Xpage=470>

<hw>Ec"to-</hw> <tt>(?)</tt>. <def>See <er>Ect-</er>.</def>

<h1>Ectoblast</h1> <Xpage=470>

<hw>Ec"to*blast</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[<ets>Ecto-</ets> + Gr. <?/ bud, germ.]</ety> <fld>(Biol.)</fld> <sd>(a)</sd> <def>The outer layer of the blastoderm; the epiblast; the ectoderm</def>. <sd>(b)</sd> <def>The outer envelope of a cell; the cell wall.</def>

<i>Agassiz.</i>

<h1>Ectobronchium</h1> <Xpage=470>

<hw>Ec`to*bron"chi*um</hw> <tt>(?)</tt>, <tt>n.</tt>; <plu>pl. <plw>Ectobronchia</plw> <tt>(#)</tt></plu>. <ety>[NL. See <er>Ecto-</er>, and <er>Bronchia</er>.]</ety> <fld>(Anat.)</fld> <def>One of the dorsal branches of the main bronchi in the lungs of birds.</def>

<h1>Ectocuneriform, Ectocuniform</h1> <Xpage=470>

<hw><hw>Ec`to*cu*ne"ri*form</hw> <tt>(?)</tt>, <hw>Ec`to*cu"ni*form</hw> <tt>(?)</tt>,<hw> <tt>n.</tt> <ety>[<ets>Ecto-</ets> + <ets>cuneiform</ets>, <ets>cuniform</ets>.]</ety> <fld>(Anat.)</fld> <def>One of the bones of the tarsus. See <er>Cuneiform</er>.</def>

<h1>Ectocyst</h1> <Xpage=470>

<hw>Ec"to*cyst</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[<ets>Ecto-</ets> + Gr. <?/ bladder.]</ety> <fld>(Zo\'94l.)</fld> <def>The outside covering of the Bryozoa.</def>

<h1>Ectoderm</h1> <Xpage=470>

<hw>Ec"to*derm</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[<ets>Ecto-</ets> + <ets>-derm</ets>.]</ety> <fld>(Biol.)</fld> <sd>(a)</sd> <def>The outer layer of the blastoderm; epiblast</def>. <sd>(b)</sd> <def>The external skin or outer layer of an animal or plant, this being formed in an animal from the epiblast. See <i>Illust</i>. of <er>Blastoderm</er>.</def>

<h1>Ectodermal, Ectodermic</h1> <Xpage=470>

<hw><hw>Ec`to*der"mal</hw> <tt>(?)</tt>, <hw>Ec`to*der"mic</hw> <tt>(?)</tt>,<hw> <tt>a.</tt> <fld>(Biol.)</fld> <def>Of or relating to the ectoderm.</def>

<h1>Ectolecithal</h1> <Xpage=470>

<hw>Ec`to*lec"i*thal</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[<ets>Ecto-</ets> + Gr. <?/ the yolk of an egg.]</ety> <fld>(Biol.)</fld> <def>Having the food yolk, at the commencement of segmentation, in a peripheral position, and the cleavage process confined to the center of the egg; <as>as, <ex>ectolecithal</ex> ova</as>.</def>

<h1>Ectomere</h1> <Xpage=470>

<hw>Ec"to*mere</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[<ets>Ecto-</ets> + <ets>-mere</ets>.]</ety> <fld>(Biol.)</fld> <def>The more transparent cells, which finally become external, in many segmenting ova, as those of mammals.</def>

<h1>Ectoparasite</h1> <Xpage=470>

<hw>Ec`to*par"a*site</hw> <tt>(?)</tt>, <tt>n.</tt> <fld>(Zo\'94l.)</fld> <def>Any parasite which lives on the exterior of animals; -- opposed to <i>endoparasite</i>.</def> -- <wordforms><wf>Ec`to*par`a*sit"ic</wf> <tt>(#)</tt>, <tt>a.</tt></wordforms>

<h1>Ectopia</h1> <Xpage=470>