Medical Device
hearing aid
hear·ing aid
Subclass of:
Sensory Aids
Definitions related to hearing aids:
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An electronic device worn in or behind the ear by people with hearing problems that makes sounds louder.Harvard Dictionary of Health TermsHarvard Medical Publishing, 2011
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A hearing aid is a small electronic device that you wear in or behind your ear. It makes some sounds louder. A hearing aid can help people hear more in both quiet and noisy situations. Hearing aids help people who have hearing loss from damage to the small sensory cells in the inner ear. The damage can occur as a result of disease, aging, or injury from noise or certain medicines. Only about one out of five people who would benefit from a hearing aid actually uses one. If you think a hearing aid could help you, visit your doctor. There are different kinds of hearing aids. They differ by size, their placement on or inside the ear, and how much they amplify sound. The hearing aid that will work best for you depends on what kind of hearing loss you have, and how severe it is. NIH: National Institute on Deafness and Other Communication DisordersMedlinePlusU.S. National Library of Medicine, 2021
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Wearable sound-amplifying devices that are intended to compensate for impaired hearing. These generic devices include air-conduction hearing aids and bone-conduction hearing aids. (UMDNS, 1999)NLM Medical Subject HeadingsU.S. National Library of Medicine, 2021
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Hearing aid, device that increases the loudness of sounds in the ear of the wearer. The earliest aid was the ear trumpet, characterized by a large mouth at one end for collecting the sound energy from a large area and a gradually tapering tube to a narrow orifice for insertion in the ear. Modern...Encyclopedia Britannica, Inc., 2020
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