The term hearing has different meanings. In a legal sense, it can refer to a preliminary examination of an accused person, the trial of an equity case, or a session, as of an investigatory committee or a grand jury, at which testimony is taken from witnesses.
Hearing also refers to the sensory perception of sound by the ears. People who sell hearing aids (any wearable instrument or device designed for or offered for the purpose of aiding or compensating for impaired human hearing excluding assistive listening devices) are subject to state licensure. Laws regulating hearing testing and sales of hearing devices vary by state, so local laws should be consulted.
