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 , tropical cyclone .

(not in technical use) tornado.

Also called cyclone collector, cyclone separator. Machinery . a device for removing small or powdered solids from air, water, or other gases or liquids by centrifugal force.

noun

typhoon , twister * , windstorm , blast , gale , gust , storm , tornado , twister , weather , whirlwind , wind