[f. L. audī-re to hear + Gr. φωνή sound. (Improperly formed after telephone, ‘that which sounds afar,’ from Gr. -φωνος sounding, that sounds; whereas audiphone seems intended to mean ‘that which hears sound.’)] An instrument which, pressed against the upper teeth, enables the deaf to hear more distinctly.
1880. Scribner’s Mag., Feb., 637. The audiphone will prove to be of great value to deaf mutes, as it enables them to hear their own voices.
1882. Agnes Crane, in Leisure H., July, 412. The audiphone, a fan-like instrument which materially alleviates certain phases of deafness.
