mesos

mesos, mese, meson [CL < μέσος, μέση, μέσον] 1 (as sb f., mus., w. ellipsis of χορδή): a (sg.) highest note in the tetrachord next above the lowest. b (pl.) notes of the tetrachord next above the lowest. a ~e, id est media tocius monachordi Odington 81; paramese, ~e, licanos meson Will. 18; ~e, que est media, iota et lambda jacens Ib. 20.  b hypate ~on, id est mediarum principalis. parhypate ~on, id est sub principali. lichanas ~on, id est index illius tetrachordi Odington 81; diezeugmenon ‥ et synemmenon creat reliqua tetrachorda, scilicet ~on et hypaton Ib. 83; licanos ~on Will. 18. 2 (as sb n.) middle. ~on, i. medium Alph. 112.