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diatonicism

noun
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di·​a·​ton·​i·​cism | \ ˌdīəˈtänəˌsizəm \
variants: or less commonly diatonism \ ˈdīəˌtäˌnizəm , dīˈatəˌn-​ \
plural -s

Definition of diatonicism

1 : the quality or state of being diatonic
2 : the use of diatonic harmony —contrasted with chromaticism

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“Diatonicism.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/diatonicism. Accessed 17 January 2020.

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