| |Definition=ύος, ἡ, (τετράς) Pythagorean name for <span class="sense"><span class="bld">A</span> [[the sum of the first four numbers]], i.e. <span class="bibl">10</span> (= ''1''+<span class="bibl">2</span>+<span class="bibl">3</span>+<span class="bibl">4</span>), ναὶ μὰ τὸν ἁμετέρᾳ ψυχᾷ παραδόντα τετρακτύν, παγὰν ἀενάου φύσεως <span class="title">Carm.Aur.</span>48, cf. <span class="bibl">S.E.<span class="title">M.</span> 7.94</span>, TheoSm.<span class="bibl">p.94</span> H., <span class="bibl">Hierocl.<span class="title">in CA</span>20p.465M.</span> </span><span class="sense"><span class="bld">II</span> [[the four terms]] (<span class="bibl">6</span>:<span class="bibl">8</span>:<span class="bibl">9</span>:<span class="bibl">10</span>) [[of the proportion corresponding to the chief musical intervals]], <span class="bibl">Nicom.<span class="title">Exc.</span>7</span>, <span class="bibl">10</span>; also [[their sum]] +''1'' (= <span class="bibl">36</span>), ibid.; [[the sum of the first]] <span class="bibl">8</span> [[numbers]], Plu.2.381f.</span> | | |Definition=ύος, ἡ, ([[τετράς]]) Pythagorean name for<br><span class="bld">A</span> [[the sum of the first four numbers]], i.e. 10 (= ''1''+2+3+4), ναὶ μὰ τὸν ἁμετέρᾳ ψυχᾷ παραδόντα τετρακτύν, παγὰν ἀενάου φύσεως ''Carm.Aur.''48, cf. S.E.''M.'' 7.94, TheoSm.p.94 H., Hierocl.''in CA''20p.465M.<br><span class="bld">II</span> [[the four terms]] (6:8:9:10) [[of the proportion corresponding to the chief musical intervals]], Nicom.''Exc.''7, 10; also [[their sum]] +''1'' (= 36), ibid.; [[the sum of the first]] 8 [[numbers]], Plu.2.381f. |