Deaf
deaf: 1. A term used to categorize individuals who have hearing losses greater than 75 to 80 dB, have vision as their primary input, and cannot understand speech through the ear even with the use of hearing aids. The sense of hearing for a person who is deaf is nonfunctional for the ordinary purposes of life. 2. As defined in P.L. 94-142: Hearing impairment so severe as to impede the child from processing linguistic information through hearing, with or without amplification, and which adversely affects educational performance.
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