μετριό-της · metrio-tēs — LSJ
moderation, moderation in (of, middle course
moderation, Th. 1.38, Pl. R. 560d, Philyll. 7, Plb. 1.88.3; μ. τέρψιος Democr. 191; ἡ τῆς φωνῆς μ. Isoc. 15.296; ἡ τοῦ βίου μ. Aeschin. 3.218, cf. Arist. Pol. 1315b2 (pl.); μ. τῶν σίτων (leg. συσσίτων) moderation in (of) . . , X. Cyr. 5.2.17; μ. περί τι, ἔν τινι, Pl. Def. 411e, 412b: pl., middle course, Isoc. 2.33, 4.11.
2 right amount, degree
the right amount or degree of anything, Hp. Off. 3, Fract. 5: pl., Liq. 1.
II middle condition, modest circumstances, ability
middle condition, modest circumstances or ability, POxy. 1121.10 (iii A.D.), PMasp. 305.11 (vi A.D.), etc.
III graceful proportions, elegance
graceful proportions, elegance, Arist. Pol. 1309b27, Aesop. 204 b.