An interruption of a settled and peaceful condition. The loud music from the party caused a disturbance in the neighborhood.
A breakdown of peaceful and law-abiding behavior. The protest turned into a disturbance when the crowd began to clash with the police.
A mental or emotional disorder. He was diagnosed with a sleep disturbance that affected his daily life.
A disruption or interference in a system or process. The power outage was a major disturbance to the factory's production schedule.
Meteorology: an area of low atmospheric pressure, often bringing unsettled or stormy weather. The hurricane began as a small tropical disturbance off the coast.