Mus. (a) The consonant interval of the octave, corresponding to the mathematic proportion of 2 to 1 in number of vibrations; double (twies) diapasoun, the interval of two octaves, corresponding to the……

Mus. (a) The consonant interval of a fifth, corresponding to the mathematical proportion of 3 to 2 in number of vibrations; (b) a tone which sounds the interval of a fifth above another tone. …

Mus. A consonant interval. …

Mus. (a) The consonant interval of a fourth, corresponding to the mathematical proportion of 4 to 3 in number of vibrations; (b) a tone which sounds the interval of a fourth above another tone. …

Mus. An interval smaller than a full tone; also, the changing from one tone to another. …

(a) Mus. The entire range of tones in the hexachordal system of Guido d'Arezzo; ?also, the lowest tone in the scale; (b) a song; a lament. …

Mus. The lowest tone in the lowest tetrachord in ancient Greek music. …

Mus. The third note in a Greek tetrachord. …

Mus. ?The hypodorian mode. …

Mus. A lowering of the voice. …