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octachord
noun
oc·ta·chord
\ˈäktəˌkȯrd\
Definition of octachord
1 : a musical instrument having eight strings
2 : a system of eight tones (as the diatonic octave)
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Origin and Etymology of octachord
Latin octachordos with eight strings, from Greek oktachordos, from okta- octa- + -chordos stringed
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