ピタゴラス音おん律りつピタゴラスおんりつMeanings1nounPythagorean tuning; Pythagorean temperamentTechnical term in music theory referring to the tuning system based on perfect fifths, attributed to Pythagoras.ピタゴラス音おん律りつは、完かん全ぜん五ご度どの積つみ重かさねで音おん階