διάμετρος: Difference between revisions

|Definition=ον, <span class="sense"><p>&nbsp;&nbsp;&nbsp;<span class="bld">A</span> [[diametrical]]: Astrol., [[diametrically opposed]], <span class="bibl">Ptol.<span class="title">Tetr.</span>115</span>, <span class="bibl">Man.1.89</span>. </span><span class="sense">&nbsp;&nbsp;&nbsp;<span class="bld">II</span> Subst. [[δ]]. (sc. [[γραμμή]]), ἡ, [[diagonal]] of a parallelogram, <span class="bibl">Pl.<span class="title">Men.</span>85b</span>,al.; <b class="b3">κατὰ δ. συντίθεσθαι</b>, of triangles, [[by the hypotenuses]], <span class="bibl">Id.<span class="title">Ti.</span>54d</span>; [[diameter]] of a circle, <span class="bibl">Arist.<span class="title">Cael.</span>271a12</span>, etc.; [[axis]] of a sphere, <span class="bibl">Id.<span class="title">MA</span>699a29</span>; [[diameter]] of other curves, <span class="bibl">Apollon.Perg.<span class="title">Con.</span>1</span><span class="title">Def.</span>1; [[axis]] of a conic, <span class="bibl">Archim.<span class="title">Aequil.</span>2.10</span>; <b class="b3">ἡ κατὰ διάμετρον σύζευξις</b>, of circles, <span class="bibl">Arist.<span class="title">EN</span>1133a6</span>; τὰ κατὰ δ. <span class="bibl">Id.<span class="title">Cael.</span>277a24</span>; κεῖσθαι κατὰ δ. <span class="bibl">Id.<span class="title">Mete.</span>363a34</span>, al.; <b class="b3">κατὰ δ. κινεῖσθαι</b>, of quadrupeds, which move the legs <b class="b2">cross-corner-wise</b>, as horses when [[trotting]] (opp. <b class="b3">κατὰ πλευρὰν κινεῖσθαι</b> ambling, in which the legs on either side move together), <span class="bibl">Id.<span class="title">HA</span>490b4</span>, <span class="bibl"><span class="title">IA</span>712a25</span>, cf. Plu. 2.43a; <b class="b3">ἐκ διαμέτρου ἀντικείμενος</b>, of planets, <b class="b2">in opposition, PMag. Par</b>.1.2221; ἐκ διαμέτρου ἡμῖν οἱ βίοι <span class="bibl">Luc.<span class="title">Cat.</span>14</span>. </span><span class="sense">&nbsp;&nbsp;&nbsp;<span class="bld">2</span> prob. [[mitre-square]], <span class="bibl">Ar.<span class="title">Ra.</span>801</span>.</span>