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tetrachord |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Tetrachord \Tet"ra*chord\, n. [L. tetrachordon Gr ?, from ? four-stringed; te`tra- (see {Tetra-}) + ? a chord: cf F. t['e]trachorde.] (Anc. Mus.) A scale series of four sounds, of which the extremes, or first and last constituted a fourth These extremes were immutable; the two middle sounds were changeable.
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