designating or of a musical scale having five tones to the octave
Origin of pentatonicsee penta- and amp; tonic
Of or using only five tones, usually the first, second, third, fifth, and sixth tones of a diatonic scale.
- (music) Based on five tones.
- The middle movement is completely pentatonic, giving it an unusual sound.
penta- +"Ž tonic