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7 ENTRIES FOUND:

tetrachord

noun tet·ra·chord \ˈte-trə-ˌkrd\

Definition of TETRACHORD

:  a diatonic series of four tones with an interval of a perfect fourth between the first and last

Origin of TETRACHORD

Greek tetrachordon, from neuter of tetrachordos of four strings, from tetra- + chordē string — more at yarn
First Known Use: 1603

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