What does triadic harmony mean?

Triadic harmony refers to a musical structure built around triads, which are chords consisting of three notes typically spaced in intervals of thirds. In Western music, these triads are often formed from the root, third, and fifth notes of a scale. Triadic harmony serves as the foundational element for chord progressions and influences the overall tonal quality and emotional character of a piece. This approach is prevalent in various musical genres, particularly in classical and popular music.