A cyclone in strict meteorological terminology, is an area of low atmosphere pressure surrounded by a wind system blowing, in northern hemisphere in a ounter clockwise direction. A corresponding high pressure area with clockwise winds is known as an anti cyclone. In the southern hemisphere these wind directions are reserved.
Cyclone are commonly called lows and anticyclones highs. The term cycone has often been more loosely apllied to a storm and disturbance attending such pressure systems, particularly the violent tropical hurricane and the typhoon, which center on areas of unusually low pressure.
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