Definition of "audiphone" []

• An instrument which, placed against the teeth, conveys sound to the auditory nerve and enables the deaf to hear more or less distinctly. (noun)

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• "Some 20 per cent. of the pupils in deaf and dumb schools have sufficient power of hearing when assisted by the audiphone to enable them to take their places in the classes of the ordinary schools."
• "The audiphone has been recently tried in the Board School for Deaf and"
• "To a large extent they are responsible for the development of radio, the development of broadcasting equipment, the development of trans-Atlantic telephony, the development of the artificial larynx, the audiphone for testing hearing, and permalloy which enables telegraph cables to carry several times the load which they were previously able to carry, and dozens of other very interesting and very useful developments."