Definitions

1. adjective

relating to or characteristic of a system of seven pitches or notes within an octave, typically used in music theory.

“The diatonic scale is a fundamental concept in music composition.”

2. noun

a sequence of pitches within an octave that consists of a group of seven pitches in a specific order.

“The diatonic chord progression used in the song creates a sense of resolution.”

3. noun

a key or tonality based on a diatonic scale.

“The diatonic key of C major is often used in classical music pieces.”