environmental hearing aid
- a device for helping people with hearing difficulties. Environmental aids include amplified telephones, infrared links to televisions, door bells with visible as well as audible alarms, and vibrating alarm clocks.
Medical dictionary. 2011.
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environmental hearing aid — any of various devices for helping people with hearing difficulties. Environmental aids include assistive listening devices and alerting devices, such as door bells with visible as well as audible alarms, infrared links to televisions, and… … The new mediacal dictionary
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assistive listening device — see environmental hearing aid … Medical dictionary