Wiktionary
n. (context music English) a scale having five notes per octave
WordNet
n. a gapped scale with five notes
Wikipedia
A pentatonic scale is a musical scale or mode with five notes per octave in contrast to a heptatonic (seven-note) scale such as the major scale and minor scale. Pentatonic scales are very common and are found all over the world. They are divided into those with semitones (hemitonic) and those without (anhemitonic).
Usage examples of "pentatonic scale".
During the flight to Port Mey, a man carrying a musical instrument made from a stick, an old wooden box and some tongues of scrap metal tuned to a pentatonic scale, struck up a song in a wailing voice.
Ry Diem hummed and sang a sequence of clear notes on a pentatonic scale, and all around the circle, others joined in, tuning themselves to the instruments and Ry Diem.
Five notes in a wailing pentatonic scale sounded in quick succession.
Five notes in a -wailing pentatonic scale sounded in quick succession.
In the hands of a skillful player, a full five-note pentatonic scale could be drawn from the simple instrument.
The music was old age, a twenty-first-century blend of synthesized sounds and harsh percussive beats revolving vaguely around a pentatonic scale.