meta. 1  Formal second-person singular (usted) imperative form of meter. 2  First-person singular (yo) present subjunctive form of meter. 3  Formal second-person singular (usted) present subjunctive form of meter. 4  Third-person singular (Ã©l, ella, also used with usted) present subjunctive form of meter.
A common condition that results in hearing loss is chronic ear infections. Certain infections during pregnancy such as syphilis and rubella may also cause hearing loss. Hearing loss is diagnosed when hearing testing finds that a person is unable to hear 25 decibels in at least one ear. Testing for poor hearing is recommended for all newborns.
Noise- and age-related hearing loss usually affect the part of the inner ear that converts sound waves into nerve signals. Called sensorineural hearing loss, the problem typically causes a loss of hearing at higher frequencies, including sounds associated with human speech. Conductive hearing loss, by contrast, is more common in people under 40 and occurs when the outer ear or middle ear is blocked.