ης (ἡ) v. μέσος.

(sc. χορδή), ἡ, the mese, i.e. the top note of the lower tetrachord in the octave, originally the middle string of the seven-stringed (or of an earlier three-stringed) lyre, Pl. R. 443d (cf. Sch.), Arist. Metaph. 1018b29, Pr. 919b20, Euc. Sect. Can. 10; variously defined, Ptol. Harm. 2.5, Cleonid. Harm. 11, Bacch. Harm. 65; — Dor. μέσσα Philol. 6.
Geom., mean proportional, v. μέσος III. 5.
in punctuation (sc. στιγμή), dot placed midway between top and bottom of line, functioning as a comma, Satyr. 6, D.T. 630.6, Sch. D.T. p. 177 H.

ἡ, sc. χορδή, die mittlere Saite des ältesten, einfachsten, nur aus drei Saiten u. Tönen bestehenden Tonsystems der Griechen, Music. Vgl. νήτη u. ὑπάτη.