tinnitus \tin*ni"tus\ (?), n. [l., fr. tinnire to jingle.] (med.) a ringing, whistling, or other imaginary noise perceived in the ears; -- called also tinnitus aurium. tinnitus n : a ringing or booming sensation in one or both ears; a symptom of an ear infection or meniere's disease
Tinnitus is the hearing of sound when no external sound is present. While often described as a ringing, it may also sound like a clicking, hiss or roaring. Rarely, unclear voices or music are heard. The sound may be soft or loud, low pitched or high pitched and appear to be coming from one ear or both. Most of the time, it comes on gradually. In some people, the sound causes depression, anxiety or interferes with concentration.