hypolydius

hypolydius [LL < ὑπολύδιος] , (mus.) hypolydian (also as sb. m.). ypolydius, gravis sonus in musica, qui et sublydius dicitur Osb. Glouc. Deriv. 631; Odington 87 (v. hypoiastius); hypolidius Ib. 88.

hўpŏlўdĭus, a, um (ὑπολύδιος), hypolydien [nom dʼun mode musical] : Boet. Mus. 342, 13.