noun
a gapped scale with five notes; usually the fourth and seventh notes of the diatonic scale are omitted
• Syn: ↑pentatonic scale
• Derivationally related forms: ↑pentatonic
• Hypernyms: ↑gapped scale
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\\ˈpentəˌtōn\ nounEtymology: penta- + tone
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pentatone Mus. rare—0.(ˈpɛntətəʊn)
‘An interval of five whole tones, an augmented sixth’ (Stainer & Barrett).
Useful english dictionary. 2012.