三さん和わ音おんさんわおんMeanings1nountriadmusicA chord of three notes, typically consisting of a root, third, and fifth. Used in music theory contexts.三さん和わ音おんは和わ音おんの基き本ほんです。The triad is the foundation of chords.この曲きょくは三さん和わ音おんだけで構こう成せいされている。This piece is composed solely of triads.