cyclone vs. anticyclone

Meteorology. a large-scale, atmospheric wind-and-pressure system characterized by low pressure at its center and by circular wind motion, counterclockwise in the Northern Hemisphere, clockwise in the Southern Hemisphere. Compare anticyclone, extratropical cyclone, subtropical cyclone, tropical cyclone.

(not in technical use) tornado ( def 1 ).

Also called cy·clone col·lec·tor [sahy, -klohn k, uh, -lek-ter], Machinery. a device for removing small or powdered solids from air, water, or other gases or liquids by centrifugal force.

a circulation of winds around a central region of high atmospheric pressure, clockwise in the Northern Hemisphere, counterclockwise in the Southern Hemisphere.