Mus. [ad. Gr. εὔφωνον, neut. of εὔφωνος: see EUPHONY.] A musical instrument (see quot. 1842) that resembled the upright piano in form and the organ in tone.
1824. Specif. Patent, No. 4994. These said frames are to be placed as nearly as possible to the strings of the pianofortes and the euphonons.
1842. A. Savage, in Mech. Mag., XXXVII. 563. When describing the claviol I ought to have mentioned the euphonon. In this instrument the strings are of steel wire put into vibration by an endless band, acting as a bow, one band to each string.