Lydius
Could not find Lydion in Logeion dictionaries.
Lydion Proper-name adjective: neuter dative singular, Proper-name adjective: masculine accusative plural, Proper-name adjective: masculine ablative singular, Proper-name adjective: masculine dative singular, Proper-name adjective: neuter ablative singular of Lydius
secundum quod quamque gentem delectat, modis suis nomina imparuerunt: ut Lydii, ut modum suum vocant ~ium ‥; Lydii dicti a Lido Tureni fratre ‥; secundum predicta duo genera, sc. diatonicum et chromaticum, quindecim dicunt esse modos ‥ sc. hypodorius ‥, phrygius, eolius, ~ius ‥
Lȳdĭus, (12) a, um, lydien, de Lydie : Tib. 4, 1, 199 ; Prop. 3, 15, 30 || Étrusque : Virg. En. 2, 781 ; Stat. S. 4, 4, 6 || Lydius lapis Plin. 33, 126, pierre de touche ; Lydii moduli Plin. 7, 204, modes lydiens.