Dictionary

hearing aid

noun

: an electronic device worn in or on the ear to help a person who has hearing problems to hear better

Full Definition of HEARING AID

:  an electronic device usually worn in or behind the ear of a hearing-impaired person for amplifying sound

First Known Use of HEARING AID

1922

hearing aid

noun \-ˌād\   (Medical Dictionary)

Medical Definition of HEARING AID

:  an electronic device usually worn in or behind the ear of a hearing-impaired person for amplifying sound

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