Part 3644

<hw>El`a*sip"o*da</hw> <tt>(?)</tt>, <tt>n. pl.</tt> <ety>[NL., fr. Gr. <?/ metal beaten out, metal plate + <ets>-poda</ets>.]</ety> <fld>(Zo\'94l.)</fld> <def>An order of holothurians mostly found in the deep sea. They are remarkable for their bilateral symmetry and curious forms.</def> <altsp>[Written also <asp>Elasmopoda</asp>.]</altsp>

<h1>Elasmobranch</h1> <Xpage=475>

<hw>E*las"mo*branch</hw> <tt>(?)</tt>, <tt>a.</tt> <fld>(Zo\'94l.)</fld> <def>Of or pertaining to the Elasmobranchii.</def> -- <def2><tt>n.</tt> <def>One of the Elasmobranchii.</def></def2>

<h1>Elasmobranchiate</h1> <Xpage=475>

<hw>E*las`mo*bran"chi*ate</hw> <tt>(?)</tt>, <tt>a.</tt> <fld>(Zo\'94l.)</fld> <def>Of or pertaining to Elasmobranchii.</def> -- <def2><tt>n.</tt> <def>One of the Elasmobranchii.</def></def2>

<h1>Elasmobranchii</h1> <Xpage=475>

<hw>E*las`mo*bran"chi*i</hw> <tt>(?)</tt>, <tt>n. pl.</tt> <ety>[NL., fr. Gr. <?/ a metal plate + L. <ets>branchia</ets> a gill.]</ety> <fld>(Zo\'94l.)</fld> <def>A subclass of fishes, comprising the sharks, the rays, and the Chim\'91ra. The skeleton is mainly cartilaginous.</def>

<h1>Elasmosaurus</h1> <Xpage=475>

<hw>E*las`mo*sau"rus</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[NL., fr. Gr. <?/ a metal plate + <?/ a lizard.]</ety> <fld>(Paleon.)</fld> <def>An extinct, long-necked, marine, cretaceous reptile from Kansas, allied to Plesiosaurus.</def>

<h1>Elastic</h1> <Xpage=475>

<hw>E*las"tic</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[Formed fr. Gr. <?/ to drive; prob. akin to L. <ets>alacer</ets> lively, brisk, and E. <ets>alacrity</ets>: cf. F. <ets>\'82lastique</ets>.]</ety>

<p><b>1.</b> <def>Springing back; having a power or inherent property of returning to the form from which a substance is bent, drawn, pressed, or twisted; springy; having the power of rebounding; <as>as, a bow is <ex>elastic</ex>; the air is <ex>elastic</ex>; India rubber is <ex>elastic</ex>.</as></def>

<blockquote>Capable of being drawn out by force like a piece of <b>elastic</b> gum, and by its own elasticity returning, when the force is removed, to its former position. <i>Paley.</i></blockquote>

<p><b>2.</b> <def>Able to return quickly to a former state or condition, after being depressed or overtaxed; having power to recover easily from shocks and trials; <as>as, <ex>elastic</ex> spirits; an <ex>elastic</ex> constitution.</as></def>

<cs><col>Elastic bitumen</col>. <fld>(Min.)</fld> <cd>See <er>Elaterite</er>.</cd> -- <col>Elastic curve</col>. <sd>(a)</sd> <fld>(Geom.)</fld> <cd>The curve made by a thin elastic rod fixed horizontally at one end and loaded at the other.</cd> <sd>(b)</sd> <fld>(Mech.)</fld> <cd>The figure assumed by the longitudinal axis of an originally straight bar under any system of bending forces. <i>Rankine</i>.</cd> -- <col>Elastic fluids</col>, <cd>those which have the property of expanding in all directions on the removal of external pressure, as the air, steam, and other gases and vapors.</cd> -- <col>Elastic limit</col> <fld>(Mech.)</fld>, <cd>the limit of distortion, by bending, stretching, etc., that a body can undergo and yet return to its original form when relieved from stress; also, the unit force or stress required to produce this distortion. Within the elastic limit the distortion is directly proportional to the stress producing it.</cd> -- <col>Elastic tissue</col> <fld>(Anat.)</fld>, <cd>a variety of connective tissue consisting of a network of slender and very elastic fibers which are but slightly affected by acids or alkalies.</cd> -- <col>Gum elastic</col>, <cd>caoutchouc.</cd></cs>

<h1>Elastic</h1> <Xpage=475>

<hw>E*las"tic</hw>, <tt>n.</tt> <def>An elastic woven fabric, as a belt, braces or suspenders, etc., made in part of India rubber.</def> <mark>[Colloq.]</mark>

<h1>Elastical</h1> <Xpage=475>

<hw>E*las"tic*al</hw> <tt>(?)</tt>, <tt>a.</tt> <def>Elastic.</def> <mark>[R.]</mark>

<i>Bentley.</i>

<h1>Elastically</h1> <Xpage=475>

<hw>E*las"tic*al*ly</hw>, <tt>adv.</tt> <def>In an elastic manner; by an elastic power; with a spring.</def>

<h1>Elasticity</h1> <Xpage=475>

<hw>E`las*tic"i*ty</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[Cf. F. <ets>\'82lasticit\'82</ets>.]</ety>

<p><b>1.</b> <def>The quality of being elastic; the inherent property in bodies by which they recover their former figure or dimensions, after the removal of external pressure or altering force; springiness; tendency to rebound; <as>as, the <ex>elasticity</ex> of caoutchouc; the <ex>elasticity</ex> of the air.</as></def>

<p><b>2.</b> <def>Power of resistance to, or recovery from, depression or overwork.</def>

<cs><col>Coefficient of elasticity</col>, <cd>the quotient of a stress (of a given kind), by the strain (of a given kind) which it produces; -- called also <altname>coefficient of resistance</altname>.</cd> -- <col>Surface of elasticity</col> <fld>(Geom.)</fld>, <cd>the pedal surface of an ellipsoid (see <er>Pedal</er>); a surface used in explaining the phenomena of double refraction and their relation to the elastic force of the luminous ether in crystalline media.</cd></cs>

<h1>Elasticness</h1> <Xpage=475>