Part 2214

<h1>Concave</h1> <Xpage=294>

<hw>Con"cave</hw> <tt>(? &or; ?; 277)</tt>, <tt>a.</tt> <ety>[L. <ets>concavus</ets>; <ets>con-</ets> + <ets>cavus</ets> hollow: cf. F. <ets>concave</ets>. See <er>Cave</er> a hollow.]</ety> <p><b>1.</b> <def>Hollow and curved or rounded; vaulted; -- said of the interior of a curved surface or line, as of the curve of the of the inner surface of an eggshell, in opposition to <contr>convex</contr>; <as>as, a <ex>concave</ex> mirror; the <ex>concave</ex> arch of the sky.</as></def>

<p><b>2.</b> <def>Hollow; void of contents.</def> <mark>[R.]</mark>

<blockquote>As <b>concave</b> . . . as a worm-eaten nut. <i>Shak.</i></blockquote>

<h1>Concave</h1> <Xpage=294>

<hw>Con"cave</hw>, <tt>n.</tt> <ety>[L. <ets>concavum</ets>.]</ety> <p><b>1.</b> <def>A hollow; an arched vault; a cavity; a recess.</def>

<blockquote>Up to the fiery <b>concave</b> towering hight. <i>Milton.</i></blockquote>

<p><b>2.</b> <fld>(Mech.)</fld> <def>A curved sheath or breasting for a revolving cylinder or roll.</def>

<h1>Concave</h1> <Xpage=294>

<hw>Con"cave</hw>, <tt>v. t.</tt> <wordforms>[<tt>imp. & p. p.</tt> <er>concaved</er> <tt>(<?/)</tt>; <tt>p. pr.& vb. n.</tt> <er>Concaving</er>.]</wordforms> <def>To make hollow or concave.</def>

<h1>Concaved</h1> <Xpage=294>

<hw>Con"caved</hw> <tt>(?)</tt>, <tt>a.</tt> <fld>(Her.)</fld> <def>Bowed in the form of an arch; -- called also <altname>arched</altname>.</def>

<h1>Concaveness</h1> <Xpage=294>

<hw>Con"cave*ness</hw>, <tt>n.</tt> <def>Hollowness; concavity.</def>

<h1>Concavity</h1> <Xpage=294>

<hw>Con*cav"i*ty</hw> <tt>(?)</tt>, <tt>n.</tt>; <plu>pl. <plw>Concavities</plw> <tt>(#)</tt>.</plu> <ety>[L. <ets>concavitas</ets>: cf. F. <ets>concavit\'82</ets>. See <er>Concave</er>.]</ety> <def>A concave surface, or the space bounded by it; the state of being concave.</def>

<h1>Concavo-concave</h1> <Xpage=294>

<hw>Con*ca`vo-con"cave</hw> <tt>(?)</tt>, <tt>a.</tt> <def>Concave or hollow on both sides; double concave.</def>

<h1>Concavo-convex</h1> <Xpage=294>

<hw>Con*ca`vo-con"vex</hw> <tt>(?)</tt>, <tt>a.</tt> <p><b>1.</b> <def>Concave on one side and convex on the other, as an eggshell or a crescent.</def>

<p><b>2.</b> <fld>(Optics)</fld> <def>Specifically, having such a combination of concave and convex sides as makes the focal axis the shortest line between them. See <i>Illust</i>. under <er>Lens</er>.</def>

<h1>Concavous</h1> <Xpage=294>

<hw>Con*ca*"vous</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[L. <ets>concavus</ets>.]</ety> <def>Concave.</def>

<i>Abp. potter.</i>

-- <wordforms><wf>Con*ca"vous*ly</wf>, <tt>adv.</tt></wordforms>

<h1>Conceal</h1> <Xpage=294>

<hw>Con*ceal"</hw> <tt>(?)</tt>, <tt>v. t.</tt> <wordforms>[<tt>imp. & p. p.</tt> <er>Concealed</er> <tt>(?)</tt>; <tt>p. pr. & vb. n.</tt> <er>Concealing</er>.]</wordforms> <ety>[OF. <ets>conceler</ets>, L. <ets>concelare</ets>; <ets>con-</ets> + <ets>celare</ets>to hide; akin to AS. <ets>helan</ets>, G. hehlen, E. <ets>hele</ets> (<ets>to cover</ets>), <ets>helmet</ets>. See <er>Hell</er>, <er>Helmet</er>.]</ety> <def>To hide or withdraw from observation; to cover; to cover or keep from sight; to prevent the discovery of; to withhold knowledge of.</def>

<blockquote>It is the glory of God to <b>conceal</b> a thing. <i>Prov. xxv. 2.</i></blockquote>