Tetrachord

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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.


     [1913 Webster]