Definify.com

Webster 1913 Edition

Sesquitone

Ses′qui-tone

,

Noun.

[

Sesqui-

+

tone

.]

(Mus.)

A minor third, or interval of three semitones.

Webster 1828 Edition

Sesquitone

SES'QUITONE

,

Noun.

In music, a minor third, or interval of three semitones.